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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

Tetramethylpyrazine Manufacturer/High quality/Best price/In stock

Cas:1124-11-4

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 Tetramethylpyrazine supplier in China

Cas:1124-11-4

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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Hangzhou JINLAN Pharm-Drugs Technology Co., Ltd

We can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need C

Tetramethylpyrazine manufacturer with low price

Cas:1124-11-4

Min.Order:1 Gram

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Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

Unique advantages for Tetramethylpyrazine Cas 1124-11-4 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White powder Storage:Store below +30°C Package:25kg/drum Application:F

Factory best price Tetramethylpyrazine Cas 1124-11-4 with high quality

Cas:1124-11-4

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

Factory Price API 99% Tetramethylpyrazine 1124-11-4 GMP Manufacturer

Cas:1124-11-4

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Shanghai Seasonsgreen Chemical Co.,Ltd

Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu

lower price High quality Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

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Tengzhou Runlong Fragrance Co., Ltd.

1、Our factory passed ISO 9001, ISO 14001, ISO 22000 system certification; HALAL 、KOSHER、FCC AND FDA certificate are available. We can provide customers with better prices, and the supply is stable. 2、We founded in 2004,10% of the staff have more tha

FEMA 3237 with CAS 1124-11-4 spice 2,3,5,6-Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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shanghai Tauto Biotech Co., Ltd

The quality is guaranteed. If you find the product is wrong compared with COA, we promise 100% refund or change product. COA and HPLC will be shipped out with goods. You can also inform your analysis method and we will follow your analysis me

E-0195 Ligustrazine

Cas:1124-11-4

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

2,3,5,6-Tetramethyl Pyrazine

Cas:1124-11-4

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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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

Ligustrazine

Cas:1124-11-4

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Jinan Finer Chemical Co., Ltd

Product Description Product website: http://www.finerchem.com Product Name Tetramethylpyrazine CAS No. 1124-11-4

Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Gram

FOB Price: $33.0

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

Product Name: Tetramethylpyrazine Synonyms: BS Factor;Ligustrazine;Pyrazine,tetramethyl-;Tetramethylpyrazin;tetramethyl-pyrazin;FEMA 3237;FEMA NUMBER 3237;TETRAPYRAZINE CAS: 1124-11-4 MF: C8H12N2 MW: 136.19 EINECS: 214-391-2 Product Categorie

Tetramethylpyrazine 1124-11-4

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $500.0

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con

Tetramethylpyrazine CAS 1124-11-4

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $1.0 / 10.0

Type:Trading Company

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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

Top Purity CAS 1124-11-4 with best price

Cas:1124-11-4

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd

TetramethylpyrazineCAS1124-11-4

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $10.0 / 20.0

Type:Trading Company

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Tetramethylpyrazine/ LIDE PHARMA- Factory supply / Best price

Cas:1124-11-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:white powder Storage:Store in sealed containers at cool & dr

CAS 1124-11-4 Heterocyclic Compounds Pyrazine 2,3,5,6-Tetramethylpyrazine

Cas:1124-11-4

Min.Order:100 Gram

Negotiable

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

Pyrazine,2,3,5,6-tetramethyl- 1124-11-4

Cas:1124-11-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Hangzhou Fonlynn Health Technology Co., Ltd.

Packing: According to customer requirements Delivery time: In stock or depands Port of shipment: Ningbo/Shanghai/Qingdao OEM/ODM:Welcome Sample:We can offer our existing samples at once Appearance:White crystal or powder / Refer to COA Storage:

99% hot selling 1124-11-4 CAS Tetramethylpyrazine In stock

Cas:1124-11-4

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

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Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

Tetramethylpyrazine 99%

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $87.0 / 100.0

Type:Trading Company

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Qingdao Beluga Import and Export Co., LTD

Tetramethylpyrazine CAS:1124-11-4 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 inter

Tetramethylpyrazine CAS:1124-11-4

Cas:1124-11-4

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Changchun Artel lmport and Export trade company

Product Detail Minimum Order Qty. 10 Gram

Factory Supply Food flavor 99% tetramethylpyrazine in stock CAS NO.1124-11-4

Cas:1124-11-4

Min.Order:10 Gram

Negotiable

Type:Trading Company

inquiry

Hebei Mojin Biotechnology Co.,Ltd

Company information: Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in carbomer,carbopol,lead acetate,meglumine diphenyl ethylamine and other chemical raw materials and chemical reagents research and development production enterpr

Top quality CAS 1124-11-4 best price 2,3,5,6-Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $36.0 / 40.0

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developmen

Tetramethylpyrazine

Cas:1124-11-4

Min.Order:1 Kilogram

FOB Price: $20.0 / 35.0

Type:Trading Company

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Lonwin Chemical Group Limited

Tetramethylpyrazine manufacturer CAS:1124-11-4 Specification Appearance & Physical State white crystals or powder Density 1.08 Boiling Point 190ºC Melting Point 82-86ºC Flash

Factory Supply Tetramethylpyrazine manufacturer

Cas:1124-11-4

Min.Order:1 Kilogram

Negotiable

Type:Other

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Leader Biochemical Group

PRODUCT DETAILS Tetramethylpyrazine Basic information Description Chemical Characteristic Uses Preparation References Product Name: Tetramethylpyrazine

China Biggest Manufacturer factory sales Tetramethylpyrazine CAS 1124-11-4

Cas:1124-11-4

Min.Order:1000 Kilogram

FOB Price: $1.0 / 2.0

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

Pyrazine,2,3,5,6-tetramethyl-

Cas:1124-11-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Zenuo Biological Medicine Technology Co Ltd

Product Name: Tetramethylpyrazine Synonyms: Tetramethylpyrazine 1124-11-4;2 3 5 6-TETRAMETHYLPYRAZINE 98+%;Ligustrazine(tetramethylprazine);Ligustrazine(tetramethylpyrazine);2,3,5,6-TETRAMETHYLPYRAZINE WITH GC;2,3,5,6-TETRAMETHYL PYRAZINE, NATUR

Tetramethylpyrazine free sample available best quality

Cas:1124-11-4

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

2,3,5,6-tetramethylpyrazine hydrochloride

2,3,5,6-tetramethylpyrazine hydrochloride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With sodium hydroxide In water96%
2,5-dichloro-3,6-dimethylpyrazine
27023-19-4

2,5-dichloro-3,6-dimethylpyrazine

trimethylaluminum
75-24-1

trimethylaluminum

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In 1,4-dioxane; hexane for 4h; Heating;90%
3-amino-butan-2-one
52648-79-0

3-amino-butan-2-one

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
Stage #1: 3-amino-butan-2-one With acetic acid for 1.3h;
Stage #2: With potassium bromate; sodium hydrogensulfite Time;
87.2%
2.3-butanediol
513-85-9

2.3-butanediol

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With carbonylchlorohydrido(4,5-bis((diisopropylphosphino)methyl)acridine)ruthenium(II); ammonia In toluene at 150℃; under 5250.53 Torr; for 36h; Inert atmosphere; Glovebox;85%
With aluminium oxide catalysts; ammonia at 400℃;
butane-2,3-dione mono-oxime
135636-66-7

butane-2,3-dione mono-oxime

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With palladium on activated charcoal; ammonium formate In water at 80 - 90℃; for 4h; Solvent; Temperature;84.6%
With hydrogenchloride; tin Behandlung des entstandenen Methyl-<α-amino-aethyl>-ketons mit Alkalien;
With hydrogenchloride; tin(ll) chloride Behandlung des entstandenen Methyl-<α-amino-aethyl>-ketons mit Alkalien;
Tetramethylpyrazine hydrochloride

Tetramethylpyrazine hydrochloride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With sodium hydroxide In water76.1%
3-Amino-2-butanone hydrochloride
21419-24-9

3-Amino-2-butanone hydrochloride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With air; sodium acetate In methanol at 60℃;73%
ligustrazine hydrochloride

ligustrazine hydrochloride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With sodium hydroxide In water pH=3 - ~ 8;61.1%
diammonium hydrogenphosphate

diammonium hydrogenphosphate

3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
In water55.5%
dimethylglyoxal
431-03-8

dimethylglyoxal

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With hydrogenchloride; pyridoxal 5'-phosphate; (S)-1,2,3,4-tetrahydronapht-1-yl-amine; amine transaminase-113 In water; dimethyl sulfoxide at 30℃; for 72h; pH=7.4; Reagent/catalyst; Enzymatic reaction; chemoselective reaction;50%
acetonitrile
75-05-8

acetonitrile

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With titanium tetrachloride; zinc In tetrahydrofuran for 144h; Heating;44%
With titanium tetrachloride; zinc In tetrahydrofuran for 144h; Heating; other nitriles;44%
pyridine
110-86-1

pyridine

L-Aspartic acid
56-84-8

L-Aspartic acid

acetic anhydride
108-24-7

acetic anhydride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
und Einw. von Ammoniak;
2-acetamido-3-butanone
6628-81-5

2-acetamido-3-butanone

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With hydrogenchloride Destillieren des Reaktionsprodukts mit Quecksilber(II)-chlorid und Kaliumcarbonat;
dimethyl glyoxime
17117-97-4

dimethyl glyoxime

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With ethanol; nickel at 70 - 90℃; Hydrogenation;
3-chloro-2-butanone
4091-39-8

3-chloro-2-butanone

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With ammonia
L-Aspartic acid
56-84-8

L-Aspartic acid

acetic anhydride
108-24-7

acetic anhydride

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With pyridine Einw. von Ammoniak auf das Reaktionsprodukt;
N-methyl-2,5-dimethylpyrazinium bromide
88234-17-7

N-methyl-2,5-dimethylpyrazinium bromide

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

2,3,5-trimethylpyrazine
14667-55-1

2,3,5-trimethylpyrazine

Conditions
ConditionsYield
at 275 - 280℃;
butane-2,3-dione dioxime
95-45-4

butane-2,3-dione dioxime

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With sodium hydroxide; zinc
2-<2-Hydroxy-2-(p-methylphenyl)ethyl>-3,5,6-trimethylpyrazine
72725-72-5

2-<2-Hydroxy-2-(p-methylphenyl)ethyl>-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

4-methyl-benzaldehyde
104-87-0

4-methyl-benzaldehyde

Conditions
ConditionsYield
In diethylene glycol dimethyl ether at 160℃; Kinetics; Thermodynamic data; other temperature (170 deg C) investigated; ΔH(excit.) and ΔS(excit.) given;
In various solvent(s) at 171.5℃; Kinetics; in diglyme-d14; isotopic effect;
2-<2-Hydroxy-2-(p-chlorophenyl)ethyl>-3,5,6-trimethylpyrazine
72725-77-0

2-<2-Hydroxy-2-(p-chlorophenyl)ethyl>-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

Conditions
ConditionsYield
In diethylene glycol dimethyl ether at 160℃; Kinetics; Thermodynamic data; other temperature (170 deg C) and other solvent (DMF) investigated; ΔH(excit.) and ΔS(excit.) given;
2-<2-Hydroxy-2-(p-methoxyphenyl)ethyl>-3,5,6-trimethylpyrazine
72725-74-7

2-<2-Hydroxy-2-(p-methoxyphenyl)ethyl>-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

Conditions
ConditionsYield
In various solvent(s) at 171.5℃; Kinetics; in diglyme-d14; isotopic effect;
In diethylene glycol dimethyl ether at 160℃; Kinetics; Thermodynamic data; other temperature (170 deg C) and other solvent (DMF) investigated; ΔH(excit.) and ΔS(excit.) given;
2-<2-Hydroxy-2-ethyl>-3,5,6-trimethylpyrazine
72725-76-9

2-<2-Hydroxy-2-ethyl>-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

4-dimethylamino-benzaldehyde
100-10-7

4-dimethylamino-benzaldehyde

Conditions
ConditionsYield
In various solvent(s) at 171.5℃; Kinetics; in diglyme-d14; isotopic effect;
2-<2-Hydroxy-2-(p-nitrophenyl)ethyl>-3,5,6-trimethylpyrazine
72725-78-1

2-<2-Hydroxy-2-(p-nitrophenyl)ethyl>-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

Conditions
ConditionsYield
In diethylene glycol dimethyl ether at 160℃; Kinetics; Thermodynamic data; other temperature (170 deg C) investigated; ΔH(excit.) and ΔS(excit.) given;
2-(2-Hydroxy-2-phenylethyl)-3,5,6-trimethylpyrazine
10130-14-0

2-(2-Hydroxy-2-phenylethyl)-3,5,6-trimethylpyrazine

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

benzaldehyde
100-52-7

benzaldehyde

Conditions
ConditionsYield
In diethylene glycol dimethyl ether at 160℃; Kinetics; Thermodynamic data; other temperature (170 deg C) investigated; ΔH(excit.) and ΔS(excit.) given;
3-azido-butan-2-one
98022-59-4

3-azido-butan-2-one

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With sodium hydrogen telluride 1.) ethanol; 2.) Celite; Yield given. Multistep reaction;
3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

Conditions
ConditionsYield
With diammonium phosphate In water for 24h; Ambient temperature;42.6 % Chromat.
With ammonium acetate at 85℃; for 4h;
With ammonium acetate In water at 25℃; under 735.5 Torr; Rate constant; Thermodynamic data; Mechanism; Ea; other ammonium salts; var. solvents, temperature and pressure; effect of high pressure; effect of propylene glycol; effect of nicotinamide adenine dinucleotide and flavin adenine dinucleotide as hydrogen acceptors;
With sodium hydroxide; ammonium phosphate; ammonium citrate In water at 85℃; for 5h; phosphate buffer, pH 7.2; reaction in acetate buffer, pH 7.2; addition of MeOH and EtOH; effects of a buffer and solvent on tetramethylpyrazine formation in a 3-hydroxy-2-butanone-ammonium hydroxide system;
With ammonium acetate In water
3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

A

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

B

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

Conditions
ConditionsYield
With diammonium phosphate In water for 24h; Product distribution; Mechanism; Ambient temperature; other acetols, other ammonia precursors, var. reaction time;A 5.6 % Chromat.
B 51.0 % Chromat.
With diammonium phosphate In water for 24h; Ambient temperature;A 5.6 % Chromat.
B 51.0 % Chromat.
3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

A

2,4,5-trimethyloxazole
20662-84-4

2,4,5-trimethyloxazole

B

2,4,5-trimethyl-2,5-dihydro-1,3-oxazole
22694-96-8

2,4,5-trimethyl-2,5-dihydro-1,3-oxazole

C

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

D

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

E

(E)-5-Hydroxy-3,4-dimethyl-hex-3-en-2-one

(E)-5-Hydroxy-3,4-dimethyl-hex-3-en-2-one

F

3-[2-Hydroxy-1-methyl-prop-(E)-ylideneamino]-butan-2-one

3-[2-Hydroxy-1-methyl-prop-(E)-ylideneamino]-butan-2-one

Conditions
ConditionsYield
With ammonium acetate In water at 25℃; Rate constant; Thermodynamic data; Mechanism; E(a); other solvents, var. temp.;
3-hydroxy-2-butanon
513-86-0, 52217-02-4

3-hydroxy-2-butanon

A

2,4,5-trimethylthiazole
13623-11-5

2,4,5-trimethylthiazole

B

Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

C

2-(1-mercaptoethyl)-2,4,5-trimethyl-3-thiazoline
84310-28-1

2-(1-mercaptoethyl)-2,4,5-trimethyl-3-thiazoline

D

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-oxazoline

E

2-(1-mercaptoethyl)-2,4,5-trimethyl-3-oxazoline

2-(1-mercaptoethyl)-2,4,5-trimethyl-3-oxazoline

F

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-thiazoline

2-(1-hydroxyethyl)-2,4,5-trimethyl-3-thiazoline

Conditions
ConditionsYield
With hydrogenchloride; ammonium sulfide at 50℃; for 2h; Product distribution; var. temp.;
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

cyclobis[[cis-Pt(R(-)-DIPO)(4-ethynylpyridine)2][cis-Pt(R(+)-BINAP)(CF3SO3)2]]*2AgCF3SO3*4H2O

cyclobis[[cis-Pt(R(-)-DIPO)(4-ethynylpyridine)2][cis-Pt(R(+)-BINAP)(CF3SO3)2]]*2AgCF3SO3*4H2O

cyclobis[[cis-Pt(R(-)-DIOP)(4-ethynylpyridine)2][cis-Pt(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*4H2O

cyclobis[[cis-Pt(R(-)-DIOP)(4-ethynylpyridine)2][cis-Pt(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*4H2O

Conditions
ConditionsYield
In dichloromethane-d2 shaking (25°C); solvent removal (N2, vac.); elem. anal.;100%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

cycylobis[[cis-Pt(S(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*4H2O

cycylobis[[cis-Pt(S(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*4H2O

cyclobis[[cis-Pt(S(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*4H2O

cyclobis[[cis-Pt(S(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(R(+)-BINAP)(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*4H2O

Conditions
ConditionsYield
In dichloromethane-d2 shaking (25°C); solvent removal (N2, vac.); elem. anal.;100%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

carbon dioxide
124-38-9

carbon dioxide

3,5,6-trimethyl-2-pyrazinylacetic acid lithium salt
107209-20-1

3,5,6-trimethyl-2-pyrazinylacetic acid lithium salt

Conditions
ConditionsYield
With lithium diisopropyl amide In hexane 1) hexane, 0 deg C, 30 min, 2) 0 deg C, 30 min;99%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

cyclobis[[cis-Pt(R(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(PEt3)2-(OSO2CF3)2]]*2AgOTf

cyclobis[[cis-Pt(R(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(PEt3)2-(OSO2CF3)2]]*2AgOTf

cycylobis[[cis-Pt(R(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(PEt3)2(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*3H2O

cycylobis[[cis-Pt(R(+)-DIOP)(4-ethynylpyridine)2][cis-Pd(PEt3)2(OSO2CF3)2]]*2AgOTf*tetramethylpyrazine*3H2O

Conditions
ConditionsYield
In acetone shaking (room temp., 5 min), NMR monitoring; solvent removal (dry N2), drying (vac.); elem. anal.;99%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

dichloro-bis(triethylphosphine)-di-μ-chloro-diplatinum(II)

dichloro-bis(triethylphosphine)-di-μ-chloro-diplatinum(II)

trans-{PtCl2(triethylphosphine)}2(2,3,5,6-tetamethylpyrazine)
118515-87-0

trans-{PtCl2(triethylphosphine)}2(2,3,5,6-tetamethylpyrazine)

Conditions
ConditionsYield
In chloroform-d1 ligand and Pt complex (1:2 mol) in CDCl3 (or CD2Cl2) were stirred for 5 min; floating layer of hexane over soln.; elem. anal.;94%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

2-(bromomethyl)-3,5,6-trimethylpyrazine
79074-45-6

2-(bromomethyl)-3,5,6-trimethylpyrazine

Conditions
ConditionsYield
With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane at 30℃; Reflux;92%
With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane75%
With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane at 75℃; for 10h; Incandescent irradiation;72.8%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

{Pt2Cl2(μ-Cl)2(PMePh2)2}
16633-87-7

{Pt2Cl2(μ-Cl)2(PMePh2)2}

trans-{PtCl2(diphenylmethylphosphine)}2(2,3,5,6-tetramethylpyrazine)
118515-91-6

trans-{PtCl2(diphenylmethylphosphine)}2(2,3,5,6-tetramethylpyrazine)

Conditions
ConditionsYield
In chloroform-d1 ligand and Pt complex (1:2 mol) in CDCl3 (or CD2Cl2) were stirred for 5 min; floating layer of hexane over soln.; elem. anal.;91%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

4-(hexyloxy)benzaldehyde
5736-94-7

4-(hexyloxy)benzaldehyde

(E,E,E,E)-2,3,5,6-tetrakis[2-(4-hexyloxyphenyl)ethenyl]pyrazine

(E,E,E,E)-2,3,5,6-tetrakis[2-(4-hexyloxyphenyl)ethenyl]pyrazine

Conditions
ConditionsYield
With potassium tert-butylate In N,N-dimethyl-formamide at 23℃; for 4h; Inert atmosphere;91%
Multi-step reaction with 2 steps
1: potassium tert-butylate / N,N-dimethyl-formamide
2: potassium tert-butylate / N,N-dimethyl-formamide
View Scheme
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

acetylferrocene
1271-55-2

acetylferrocene

C20H22FeN2

C20H22FeN2

Conditions
ConditionsYield
Stage #1: Tetramethylpyrazine With n-butyllithium In tetrahydrofuran; hexane at -25 - 20℃; Inert atmosphere;
Stage #2: acetylferrocene With acetic anhydride; acetic acid In tetrahydrofuran; hexane at 120℃; for 2h; Inert atmosphere;
90%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

2,3,5,6-tetramethylpyrazine mono N-oxide
22978-83-2

2,3,5,6-tetramethylpyrazine mono N-oxide

Conditions
ConditionsYield
With dihydrogen peroxide; acetic acid at 70℃;88.2%
With dihydrogen peroxide; acetic acid at 0 - 60℃;82%
With dihydrogen peroxide; acetic acid at 94℃; for 12h;78.8%
Tetramethylpyrazine
1124-11-4

Tetramethylpyrazine

4-hydroxyisophthalic acid
636-46-4

4-hydroxyisophthalic acid

2C8H6O5*C8H12N2

2C8H6O5*C8H12N2

Conditions
ConditionsYield
In methanol at 20℃; for 336h;88%

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