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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality 1-Pentyn-1-Ol with high purity

Cas:6261-22-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply 1-Pentyn-1-Ol

Cas:6261-22-9

Min.Order:1

Negotiable

Type:Other

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

Product Name: 2-Pentyn-1-ol Synonyms: 2-pentyn-1-0l;2-PENTYNE-1-OL;2-PENTYN-1-OL;pent-2-yn-1-ol;2-Pentyn-1-ol,98+%;2-PENTYN-2-OL;2-Pentyn-1-ol,95%;1-pentyn-1-ol CAS: 6261-22-9 MF: C5H8O MW: 84.12 EINECS: 228-411

6261-22-9 2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Gram

FOB Price: $8900.0

Type:Lab/Research institutions

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Manufacturer supply CAS 6261-22-9 with best quality

Cas:6261-22-9

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Name 2-Pentyn-1-ol/pent-2-yn-1-ol CAS NO. 6261-22-9 Molecular Formula C5H8O Molecular Weight 84.12 EINECS 228-411-2

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

2-Pentyn-1-ol 6261-22-9

Cas:6261-22-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

2-Pentyn-1-ol CAS:6261-22-9 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediate

2-Pentyn-1-ol CAS:6261-22-9

Cas:6261-22-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

1-Pentyn-1-Ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Manufacturers

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

High quality 1-Pentyn-1-Ol

Cas:6261-22-9

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:colourless or light yellow liquid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:25kg/drum, or as per your request. Application:Used as Pharmaceu

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Siwei Development Group Ltd.

Product name: Pent-2-yn-1-ol CAS No.:6261-22-9 Molecule Formula:C5H8O Molecule Weight:84.12 Purity: 99.0% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS SPECIFI

Best Quality Pent-2-yn-1-ol with good supplier

Cas:6261-22-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Shanghai Minstar Chemical Co., Ltd

2-Pentyn-1-ol Basic information Product Name: 2-Pentyn-1-ol Synonyms: 2-pentyn-1-0l;2-PENTYN-1-OL, 98%2-PENTYN-1-OL, 98%2-PENTYN-1-OL, 98%;2-PENTYNE-1-OL;2-PENTYN-1-OL;pent-2-yn-1-ol;2-Pentyn-1-ol,98+%;2-Pentyn-1-ol,95%;1-pentyn-1-ol CAS: 6

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

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Hangzhou Zhongqi chem Co.,Ltd.

Located in Hangzhou National Hi-Tech Industrial Development Zone, zhongqichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. Benefiting from the outstanding customer service and

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Trading Company

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TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

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Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

pent-2-yn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Suzhou Health Chemicals Co., Ltd.

High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

2-Pentyn-1-ol cas no. 6261-22-9 98%%

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

2-Pentyn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

pent-2-yn-1-ol

Cas:6261-22-9

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

n-butyllithium
109-72-8, 29786-93-4

n-butyllithium

but-1-yne
107-00-6

but-1-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With paraformaldehyde In tetrahydrofuran; hexane99%
2-pent-2-ynyloxy-tetrahydro-pyran
6261-21-8

2-pent-2-ynyloxy-tetrahydro-pyran

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With silica gel; iron(III) chloride for 96h; Ambient temperature;92%
With sulfuric acid In ethanol Heating;
With sulfuric acid In methanol
hydrogenchloride In methanol for 10h; Ambient temperature; Yield given;
With water; sulfuric acid In methanol at 65℃; for 2h;
formaldehyd
50-00-0

formaldehyd

but-1-yne
107-00-6

but-1-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
Stage #1: but-1-yne With ethyl bromide; magnesium In tetrahydrofuran at 20 - 30℃; for 0.75h; Cooling with ice;
Stage #2: formaldehyd In tetrahydrofuran at 20℃; for 3h; Reflux;
Stage #3: With sulfuric acid In water Cooling with ice;
90%
With n-butyllithium In diethyl ether63%
Stage #1: but-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78 - 0℃; for 1h; Inert atmosphere;
Stage #2: formaldehyd In tetrahydrofuran; hexane at 0 - 50℃; for 4h; Inert atmosphere;
Stage #1: but-1-yne With ethyl bromide; magnesium In tetrahydrofuran at 30℃; for 0.75h; Cooling with ice;
Stage #2: formaldehyd In tetrahydrofuran for 3h; Reflux;
Stage #1: but-1-yne With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 2.5h;
Stage #2: formaldehyd In tetrahydrofuran at 20℃; for 16h;
ethyl bromide
74-96-4

ethyl bromide

propargyl alcohol
107-19-7

propargyl alcohol

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With lithium amide; ammonia for 1h; Heating;85%
With N,N,N,N,N,N-hexamethylphosphoric triamide; n-butyllithium In tetrahydrofuran at -30℃; for 18h;70%
With lithium; ferric nitrate In tetrahydrofuran; ammonia for 2h;50%
ethyl bromide
74-96-4

ethyl bromide

lithium
7439-93-2

lithium

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
In ammonia85%
2-(2-pentynyloxy)tetrahydropyran

2-(2-pentynyloxy)tetrahydropyran

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With methanol; pyridinium p-toluenesulfonate at 50℃; for 3h;54%
ethyl bromide
74-96-4

ethyl bromide

3-(tetrahydropyran-2'-yloxy)propyne
6089-04-9

3-(tetrahydropyran-2'-yloxy)propyne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With sodium amide Behandeln des Reaktionsprodukts mit wss.-methanol.Schwefelsaeure;
3-(tetrahydropyran-2'-yloxy)propyne
6089-04-9

3-(tetrahydropyran-2'-yloxy)propyne

ethyl iodide
75-03-6

ethyl iodide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With sodium amide Behandeln des Reaktionsprodukts mit wss.-methanol.Schwefelsaeure;
4-chlorobut-2-yn-1-ol
13280-07-4

4-chlorobut-2-yn-1-ol

methylmagnesium bromide
75-16-1

methylmagnesium bromide

A

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

B

2-methyl-2,3-butadiene-1-ol
22742-89-8

2-methyl-2,3-butadiene-1-ol

Conditions
ConditionsYield
In diethyl ether at 5℃;
pent-2-ynyl acetate
10574-76-2

pent-2-ynyl acetate

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With sodium hydroxide In methanol; water Heating;
1-(1-ethoxy-ethoxy)-pent-2-yne
68480-09-1

1-(1-ethoxy-ethoxy)-pent-2-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With sulfuric acid
1-vinyloxy-pent-2-yne
18450-62-9

1-vinyloxy-pent-2-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With hydrogenchloride
With hydrogenchloride at 19.9 - 34.9℃; Kinetics;
4-chlorobut-2-yn-1-ol
13280-07-4

4-chlorobut-2-yn-1-ol

methyl magnesium iodide
917-64-6

methyl magnesium iodide

A

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

B

2-methyl-2,3-butadiene-1-ol
22742-89-8

2-methyl-2,3-butadiene-1-ol

Conditions
ConditionsYield
In diethyl ether at -30℃; for 0.5h; Yield given. Yields of byproduct given;
In diethyl ether at -30℃; for 0.5h; Yield given;
dimethylacetylene
503-17-3

dimethylacetylene

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

ethyl iodide
75-03-6

ethyl iodide

propargyl alcohol
107-19-7

propargyl alcohol

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With lithium amide; ammonia In tetrahydrofuran
Stage #1: propargyl alcohol With n-butyllithium In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -78 - -65℃; for 1h; Cooling with acetone-dry icex; Inert atmosphere;
Stage #2: ethyl iodide In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane at -75 - 30℃; for 18h;
4-chlorobut-2-yn-1-ol
13280-07-4

4-chlorobut-2-yn-1-ol

methyl iodide
74-88-4

methyl iodide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With magnesium 1.) Et2O, THF, 2.) Et2O, THF, 1 h, reflux; Yield given. Multistep reaction;
formaldehyd
50-00-0

formaldehyd

butyne-(1)-magnesium bromide

butyne-(1)-magnesium bromide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

4-chlorobut-2-yn-1-ol
13280-07-4

4-chlorobut-2-yn-1-ol

methyl magnesium halide

methyl magnesium halide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With diethyl ether
1-bromo-pent-2-yne
16400-32-1

1-bromo-pent-2-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: NaOAc / Heating
2: NaOH / methanol; H2O / Heating
View Scheme
ethyl bromide
74-96-4

ethyl bromide

propargyl alcohol
107-19-7

propargyl alcohol

ferric nitrate
7782-61-8

ferric nitrate

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With ammonia; lithium In water
1-(1-methoxy-1-methyl-ethoxy)-pent-2-yne
84282-45-1

1-(1-methoxy-1-methyl-ethoxy)-pent-2-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With water; Amberlyst 15 at 22℃; for 1.5h; Product distribution / selectivity; Inert atmosphere;95.3 %Chromat.
1-(1-methoxy-1-methyl-propoxy)-pent-2-yne
1263216-89-2

1-(1-methoxy-1-methyl-propoxy)-pent-2-yne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With water; sulfuric acid at 22℃; for 1.5h;
formaldehyd
50-00-0

formaldehyd

1-butynyl magnesium bromide
51207-09-1

1-butynyl magnesium bromide

butyne-(1)-magnesium bromide

butyne-(1)-magnesium bromide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

ethyl pent-2-ynoate
55314-57-3

ethyl pent-2-ynoate

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Conditions
ConditionsYield
With diisobutylaluminium hydride In dichloromethane at -78℃; for 1h; Inert atmosphere;
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

methanesulfonyl chloride
124-63-0

methanesulfonyl chloride

methanesulfonic acid pent-2-ynyl ester
81159-43-5

methanesulfonic acid pent-2-ynyl ester

Conditions
ConditionsYield
With triethylamine In dichloromethane at -5℃; for 0.416667h;100%
With triethylamine In dichloromethane at 0 - 20℃; Inert atmosphere;69%
With triethylamine In dichloromethane at 20℃; for 0.5h;
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

cis-2-penten-1-ol
1576-95-0

cis-2-penten-1-ol

Conditions
ConditionsYield
With hydrogen; copper-palladium; silica gel In ethanol at 25℃; under 760.051 Torr;99.5%
With hydrogen; Lindlar's catalyst98%
With hydrogen; ethylenediamine; P2-Nickel In ethanol for 8h;96%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

A

cis-2-penten-1-ol
1576-95-0

cis-2-penten-1-ol

B

pentan-1-ol
71-41-0

pentan-1-ol

Conditions
ConditionsYield
With hydrogen; copper-palladium; silica gel In ethanol at 25℃; under 760 Torr; Kinetics;A 99.5%
B n/a
With hydrogen; ethylenediamine; Pd on pumice In tetrahydrofuran for 0.5h;A 98 % Chromat.
B 2 % Chromat.
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

p-toluenesulfonyl chloride
98-59-9

p-toluenesulfonyl chloride

toluene-4-sulfonic acid pent-2-ynyl ester
92666-05-2

toluene-4-sulfonic acid pent-2-ynyl ester

Conditions
ConditionsYield
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride In dichloromethane for 0.333333h; Ambient temperature;98%
With potassium hydroxide In diethyl ether at 0℃; for 4h;98%
With potassium hydroxide In diethyl ether at 20℃;89%
N-(tert-butoxycarbonyl)-4-nitrobenzenesulfonamide
895153-23-8

N-(tert-butoxycarbonyl)-4-nitrobenzenesulfonamide

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

4-nitro-N-(pent-2-yn-1-yl)benzene-1-sulfonamide
1489246-86-7

4-nitro-N-(pent-2-yn-1-yl)benzene-1-sulfonamide

Conditions
ConditionsYield
Stage #1: N-(tert-butoxycarbonyl)-4-nitrobenzenesulfonamide; pent-2-yn-1-ol With triphenylphosphine; diethylazodicarboxylate In tetrahydrofuran at 0 - 20℃; Inert atmosphere;
Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; Inert atmosphere;
98%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

5-bromo-2-[(4-hydroxy-benzenesulfonyl)-methyl-amino]-3-methyl-benzoic acid methyl ester
287108-60-5

5-bromo-2-[(4-hydroxy-benzenesulfonyl)-methyl-amino]-3-methyl-benzoic acid methyl ester

5-bromo-3-methyl-2-[methyl-(4-pent-2-ynyloxy-benzenesulfonyl)-amino]-benzoic acid
287108-63-8

5-bromo-3-methyl-2-[methyl-(4-pent-2-ynyloxy-benzenesulfonyl)-amino]-benzoic acid

Conditions
ConditionsYield
97%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

C10H8N2O2S

C10H8N2O2S

pent-2-yn-1-yl 5-(p-tolyl)-1,2,3-thiadiazole-4-carboxylate

pent-2-yn-1-yl 5-(p-tolyl)-1,2,3-thiadiazole-4-carboxylate

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In 1,2-dichloro-ethane at 0 - 20℃; for 3.5h; Inert atmosphere;97%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

2,2,2-trichloroacetophenone
2902-69-4

2,2,2-trichloroacetophenone

pent-2-yn-1-yl benzoate

pent-2-yn-1-yl benzoate

Conditions
ConditionsYield
With N,N,N',N'',N'''-pentamethyldiethylenetriamine In neat (no solvent) at 20 - 25℃; for 6h;96%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

tris(2-pentyn-1-oxy)borane
1013654-71-1

tris(2-pentyn-1-oxy)borane

Conditions
ConditionsYield
With boric acid In toluene for 12h; Heating;95%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

C7H4N2O2S2

C7H4N2O2S2

pent-2-yn-1-yl 5-(thiophen-2-yl)-1,2,3-thiadiazole-4-carboxylate

pent-2-yn-1-yl 5-(thiophen-2-yl)-1,2,3-thiadiazole-4-carboxylate

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In 1,2-dichloro-ethane at 0 - 20℃; for 3.5h; Inert atmosphere;95%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

1-<(tert-butyldimethylsilyl)-oxy>-2-pentyne
112373-26-9

1-<(tert-butyldimethylsilyl)-oxy>-2-pentyne

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 5h; Inert atmosphere;94%
With triethylamine In dichloromethane at 20℃;85%
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; silylation;
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

4-methyl-N-(prop-1-yn-1-yl)benzenesulfonamide
286376-23-6

4-methyl-N-(prop-1-yn-1-yl)benzenesulfonamide

N-but-2-ynyl-4-methyl-N-pent-2-ynyl-benzenesulfonamide
615562-38-4

N-but-2-ynyl-4-methyl-N-pent-2-ynyl-benzenesulfonamide

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 20℃; for 15h; Mitsunobu reaction;94%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

tris-iso-propylsilyl acetylene
89343-06-6

tris-iso-propylsilyl acetylene

(E)-3-ethyl-5-(triisopropylsilyl)pent-2-en-4-yn-1-ol

(E)-3-ethyl-5-(triisopropylsilyl)pent-2-en-4-yn-1-ol

Conditions
ConditionsYield
With ammonium acetate; palladium diacetate; C28H29N2OP In toluene; acetonitrile at 60℃; for 20h; Catalytic behavior; Reagent/catalyst; Solvent; Inert atmosphere; Schlenk technique; Sealed tube; stereoselective reaction;94%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

2-Nitrobenzenesulfonamide
5455-59-4

2-Nitrobenzenesulfonamide

2-nitro-N-(pent-2-yn-1-yl)benzene-1-sulfonamide

2-nitro-N-(pent-2-yn-1-yl)benzene-1-sulfonamide

Conditions
ConditionsYield
With 2-(diphenylphosphino)pyridine; di-tert-butyl-diazodicarboxylate In dichloromethane at 20℃; for 2h; Mitsunobu reaction;92%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

[[2,5-Ph2-3,4-Tol2(η5-C4CO)]Ru(CO)2]2

[[2,5-Ph2-3,4-Tol2(η5-C4CO)]Ru(CO)2]2

(E)-[2,5-Ph2-3,4-Tol2(η5-C4COH)]Ru(CO)2(C(Et)CHCHO)
1224466-20-9, 1224663-27-7

(E)-[2,5-Ph2-3,4-Tol2(η5-C4COH)]Ru(CO)2(C(Et)CHCHO)

Conditions
ConditionsYield
In (2)H8-toluene addn. of excess of EtCCCH2OH to soln. of Ru complex in C6D5CD3, shaking for 10-30 min until dissolving; addn. of pentane, filtration or concn., addn. of pentane, isolation of solid, crystn. by slow diffusion of pentane or hexane into THF soln.;90%
In dichloromethane-d2 addn. of excess of EtCCCH2OH to soln. of Ru complex in CD2Cl2, storage for 3-5 min; concn., addn. of pentane, isolation of solid;90%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

5-hydroxybicyclo[4.2.0]octa-1,3,5-trien-7-one

5-hydroxybicyclo[4.2.0]octa-1,3,5-trien-7-one

C13H12O2
1606590-17-3

C13H12O2

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 40℃;90%
5-Phenyl-1,2,3-thiadiazole-4-carboxylic acid
58792-15-7

5-Phenyl-1,2,3-thiadiazole-4-carboxylic acid

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

pent-2-yn-1-yl 5-phenyl-1,2,3-thiadiazole-4-carboxylate

pent-2-yn-1-yl 5-phenyl-1,2,3-thiadiazole-4-carboxylate

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In 1,2-dichloro-ethane at 0 - 20℃; for 3.5h; Inert atmosphere;90%
phenylacetic acid
103-82-2

phenylacetic acid

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

C13H14O2

C13H14O2

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃;90%
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃;
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

Triethyl orthoacetate
78-39-7

Triethyl orthoacetate

ethyl 3-ethyl-3,4-pentadienoate

ethyl 3-ethyl-3,4-pentadienoate

Conditions
ConditionsYield
With propionic acid at 140 - 145℃; for 5h;89%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

(2Z)-3-chloro-2-{[(1Z)-2-chloro-1-(hydroxymethyl)but-1-enyl]selanyl}pent-2-en-1-ol

(2Z)-3-chloro-2-{[(1Z)-2-chloro-1-(hydroxymethyl)but-1-enyl]selanyl}pent-2-en-1-ol

Conditions
ConditionsYield
With selenium dichloride In tetrahydrofuran at 20℃; for 0.75h;89%
With selenium(II) chloride In tetrahydrofuran at 0 - 20℃; Inert atmosphere; regiospecific reaction;89%
Multi-step reaction with 2 steps
1: selenium tetrachloride / chloroform / 0.5 h / 0 °C / Inert atmosphere
2: [(2)H6]acetone / 2.5 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: selenium tetrachloride / chloroform / 0.5 h / 0 °C
2: d6-acetone / 2.5 h / 20 °C
View Scheme
3,4-dihydro-2H-pyran
110-87-2

3,4-dihydro-2H-pyran

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

2-pent-2-ynyloxy-tetrahydro-pyran
6261-21-8

2-pent-2-ynyloxy-tetrahydro-pyran

Conditions
ConditionsYield
With toluene-4-sulfonic acid at 0℃; for 3h;87%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

4-methyl-N-prop-2-ynylbenzenesulfonamide
55022-46-3

4-methyl-N-prop-2-ynylbenzenesulfonamide

4-methyl-N-(pent-2-yn-1-yl)-N-(prop-2-yn-1-yl)-benzenesulfonamide
222320-31-2

4-methyl-N-(pent-2-yn-1-yl)-N-(prop-2-yn-1-yl)-benzenesulfonamide

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 20℃; for 15h; Mitsunobu reaction;87%
2,2-dimethyl-3-butyne
917-92-0

2,2-dimethyl-3-butyne

pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

(E)-3-ethyl-6,6-dimethylhept-2-en-4-yn-1-ol

(E)-3-ethyl-6,6-dimethylhept-2-en-4-yn-1-ol

Conditions
ConditionsYield
With ammonium acetate; C40H37N2OP; bis(dibenzylideneacetone)-palladium(0) In toluene; acetonitrile at 60℃; for 16h; Inert atmosphere; stereoselective reaction;86%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

3-methylsalicylic acid methyl ester
23287-26-5

3-methylsalicylic acid methyl ester

methyl 3-methyl-2-(2-pentynyloxy)benzoate
488150-69-2

methyl 3-methyl-2-(2-pentynyloxy)benzoate

Conditions
ConditionsYield
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at 0℃; for 5h; Mitsunobu reaction;85%
pent-2-yn-1-ol
6261-22-9

pent-2-yn-1-ol

allyl bromide
106-95-6

allyl bromide

allyl pent-2-ynyl ether
94513-13-0

allyl pent-2-ynyl ether

Conditions
ConditionsYield
Stage #1: pent-2-yn-1-ol With sodium hydride In tetrahydrofuran at 20℃; for 2h;
Stage #2: allyl bromide In tetrahydrofuran at 20℃; for 2h;
85%
Stage #1: pent-2-yn-1-ol With sodium hydride In tetrahydrofuran at 0 - 20℃;
Stage #2: allyl bromide In tetrahydrofuran at 20℃; for 2h;
85%
Stage #1: pent-2-yn-1-ol With sodium hydride In tetrahydrofuran at 0 - 20℃;
Stage #2: allyl bromide In tetrahydrofuran at 0 - 20℃;
85%
With sodium hydride In tetrahydrofuran at 20℃; for 2h;85%
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