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Shanxi Ankesi Biotechnology Co., Ltd

Our Advantage 1. Rich experience We specialize in this filed for many years, our APIs exported to all over the world and and we established long friendly relations of cooperation with our clients. 2. Great quality,purity and favorable Good qual

Hot selling CAS139-85-5 specializing in quality assurance AKS

Cas:139-85-5

Min.Order:1 Kilogram

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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem’s R&D center offer custom synthesis according to the contract research and development services for t

3,4-Dihydroxybenzaldehyde TOP1 supplier

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $3.0

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Appearance Light gray or light brown crystalline powder Light grey crystalline powder Sol

High purity 3,4-Dihydroxybenzaldehyde with high quality cas:139-85-5

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $88.0 / 160.0

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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 3,4-Dihydroxybenzaldehyde supplier in China

Cas:139-85-5

Min.Order:0 Metric Ton

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Jinan Finer Chemical Co., Ltd

Product description: Product name 3,4-Dihydroxybenzaldehyde CAS number 139-85-5 Assay ≥99% Appearance Yellowish powder Capacity 500mt/year Application Pharmaceutical and pes

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:100 Gram

FOB Price: $12.0

Type:Lab/Research institutions

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Wuhan Fortuna Chemical Co.,Ltd

1.High quality : the purity is 99% min . through multiple producing procedures. 2.Competitive price : low price because of our skilled production technolpgy ,save the production cost at most , and give big profit room to our customers545.Safe and f

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Kilogram

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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

High Quality 99% 3,4-Dihydroxybenzaldehyde 139-85-5 ISO Producer

Cas:139-85-5

Min.Order:1 Gram

FOB Price: $0.1

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Enke Pharma-tech Co.,Ltd. (Cangzhou, China )

Cangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new ap

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $5.0 / 10.0

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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 Protocatechualdehyde

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

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Chemwill Asia Co., Ltd.

3,4-Dihydroxybenzaldehyde -- CHemwill

Cas:139-85-5

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Manufacturers

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Sinoway Industrial Co., Ltd.

Why is SINOWAY: 1) Specialized in pharmaceutical and healthcare industrial for 34 years. 2) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days. 4) We have warehouse in USA with quickly shipment . 5) We c

Protocatechualdehyde 3,4-Dihydroxybenzaldehyde 139-85-5

Cas:139-85-5

Min.Order:25 Kilogram

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Type:Trading Company

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Hebei yanxi chemical co.,LTD.

Hebei Yanxi Chemical Co., Ltd. is a professional research, development and production of lead acetate benzene acetamide enterprise backbone members by local well-known entrepreneurs and professional senior engineers in the party's "low car

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Metric Ton

FOB Price: $1.0 / 2.0

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Hubei DiBo chemical co., LTD

Name:3,4-DIHYDROXYBENZALDEHYDE CAS NO:139-85-5 Grade:Medical scientific research and export Molecular formula: C7H6O3 Molecular weight:138.12 Product Quality 12 years of chemical raw materials Mature operation of the industry System stabil

3,4-DIHYDROXYBENZALDEHYDE/ CAS:139-85-5/raw material/ high-quality

Cas:139-85-5

Min.Order:25 Kilogram

FOB Price: $2.0 / 3.0

Type:Other

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 6 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

139-85-5 Protocatechualdehyde

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $1000.0

Type:Lab/Research institutions

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Ality Chemical Corporation

Specifications of our 3,4-Dihydroxybenzaldehyde CAS 139-85-5: Items Specifications Results Appearance Pale yellow to pale gray powder Conforms Assay ≥99% 99.82% Welcome to inquire us to get the

Factory Supply 3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Gram

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Type:Other

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Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturing

Protocatechualdehyde CAS:139-85-5

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $15.0 / 50.0

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

UPS Standard CAS 139-85-5 with fast shipping

Cas:139-85-5

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Protocatechualdehyde

Cas:139-85-5

Min.Order:10 Kilogram

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Type:Trading Company

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Henan Sinotech Import&Export Corporation

Chemical Name: Protocatechualdehyde CAS No.: 139-85-5 Molecular Fomula: C7H6O3 Chemical Structure: Molecular weight: 138.12 Appearance: powder Appearance:Slightly Brown Powder Storage:Store in cool and dry place, away from sun light. Pac

Protocatechualdehyde CAS:139-85-5

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Hubei Langyou International Trading Co., Ltd

Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best s

Protocatechualdehyde Manufacturer For Preservative Antiseptic Fungicides

Cas:139-85-5

Min.Order:10 Gram

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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

3,4-Dihydroxybenzaldehyde 139-85-5

Cas:139-85-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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

3,4-Dihydroxybenzaldehyde/Protocatechualdehyde manufacturer with low price

Cas:139-85-5

Min.Order:1 Gram

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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

Protocatechualdehyde CAS: 139-85-5 Health-care Products

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $200.0 / 210.0

Type:Trading Company

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Qingdao Beluga Import and Export Co., LTD

ProtocatechualdehydeCAS: 139-85-5 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 interm

ProtocatechualdehydeCAS: 139-85-5

Cas:139-85-5

Min.Order:1 Gram

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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

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Kilogram

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Type:Lab/Research institutions

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HUBEI RISON CHEMICAL CO.,LTD.

Located in Wuhan City of Hubei Province, Wuhan Rison Trading co., Ltd is engaged in the supply of fine specialty chemicals. Our business includes metal surface treatment, such as nickel/zinc/copper plating, perfluoro chemicals, tin salts (stannous su

CAS?139-85-5?/ 3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:3000 Kilogram

FOB Price: $20.0 / 100.0

Type:Other

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Hubei Jiutian Bio-medical Technology Co., Ltd

1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie

3,4-DIHYDROXYBENZALDEHYDE CAS 139-85-5

Cas:139-85-5

Min.Order:1 Kilogram

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Hebei Mojin Biotechnology Co.,Ltd

Product quality: Our company have high quality product , and also the product we have good manufacture . First of all, this product is of fine quality. Every finish should be checked by quality inspection system.And every one should be also tried

protocatechualdehyde CAS 139-85-5 3 4-hydroxybenzaldehyde

Cas:139-85-5

Min.Order:1 Kilogram

FOB Price: $20.0 / 30.0

Type:Trading Company

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Lonwin Chemical Group Limited

Protocatechualdehyde CAS:139-85-5 Specification Items Specification Product name 3,4-dihydroxybenzaldehyde CAS# 139-85-5 Appearance

Factory supply Protocatechualdehyde

Cas:139-85-5

Min.Order:1 Kilogram

Negotiable

Type:Other

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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

3,4-Dihydroxybenzaldehyde

Cas:139-85-5

Min.Order:0

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Synthetic route

vanillin
121-33-5

vanillin

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With boron tribromide In dichloromethane at 4℃; for 1h;100%
With boron tribromide-dimethyl sulfide complex In 1,2-dichloro-ethane at 83.5℃; for 0.1h;99.3%
Stage #1: vanillin With boron tribromide-dimethyl sulfide complex In dichloromethane at 0 - 20℃; Inert atmosphere;
Stage #2: With water In methanol; dichloromethane at 0℃; for 0.166667h; Inert atmosphere;
99%
isovanillin
621-59-0

isovanillin

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
Stage #1: isovanillin With pyridine; iodine; aluminium In acetonitrile for 18h; Reflux;
Stage #2: With hydrogenchloride In water; acetonitrile at 20℃;
99%
With aluminium(III) iodide In dimethyl sulfoxide; acetonitrile at 80℃; for 18h;95%
With aluminium(III) iodide; dimethyl sulfoxide In acetonitrile at 80℃; for 18h;95%
piperonal
120-57-0

piperonal

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With boron trichloride - methyl sulfide complex In 1,2-dichloro-ethane at 83.5℃; for 29.5h; other reagent;98.5%
With aluminium(III) iodide; tetra-(n-butyl)ammonium iodide In cyclohexane for 1.5h; Heating;84%
With titanium tetrachloride In dichloromethane at -20 - -10℃; for 4h; Inert atmosphere;68.4%
3,4-bis-methoxymethoxy-benzaldehyde
6515-06-6

3,4-bis-methoxymethoxy-benzaldehyde

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With toluene-4-sulfonic acid In neat (no solvent, solid phase) at 20℃; for 0.583333h; Green chemistry;98%
2-iodoisovanillin
138490-94-5

2-iodoisovanillin

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
In [(2)H6]acetone; dichloromethane96.1%
4-hydroxy-3-ethoxybenzaldehyde
121-32-4

4-hydroxy-3-ethoxybenzaldehyde

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With aluminium(III) iodide In dimethyl sulfoxide; acetonitrile at 80℃; for 18h;96%
With aluminium(III) iodide; dimethyl sulfoxide In acetonitrile at 80℃; for 18h;95%
With aluminium(III) iodide; calcium oxide In acetonitrile at 80℃; for 18h;93%
3,4-dihydroxyphenylacetate
102-32-9

3,4-dihydroxyphenylacetate

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With dipotassium peroxodisulfate In water at 90℃; for 12h; Green chemistry;63%
benzene-1,2-diol
120-80-9

benzene-1,2-diol

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
62.4%
3,4-dimethoxy-benzaldehyde
120-14-9

3,4-dimethoxy-benzaldehyde

A

vanillin
121-33-5

vanillin

B

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With 1-methyl-pyrrolidin-2-one; potassium carbonate; thiophenol for 0.25h; Heating;A 58%
B 20%
3-hydroxy-4-methoxybenzyl alcohol
4383-06-6

3-hydroxy-4-methoxybenzyl alcohol

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
Stage #1: 3-hydroxy-4-methoxybenzyl alcohol With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In tetrahydrofuran at 20℃; Darkness;
Stage #2: With sodium dithionite; water In tetrahydrofuran Darkness;
56%
3,4-dihydroxy-5-iodobenzaldehyde
54246-05-8

3,4-dihydroxy-5-iodobenzaldehyde

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With silver; sodium hydrogencarbonate; sodium iodide; zinc In 1,2-dimethoxyethane; dimethyl sulfoxide at 80℃; for 6h;27%
methanol
67-56-1

methanol

caffeic acid
331-39-5

caffeic acid

A

3,4-Dihydroxybenzoic acid
99-50-3

3,4-Dihydroxybenzoic acid

B

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

C

(E)-2-hydroxy-2-(3,4-dihydroxyphenyl)ethanaloxime

(E)-2-hydroxy-2-(3,4-dihydroxyphenyl)ethanaloxime

D

(E)-2-(3,4-dihydroxyphenyl)-2-methoxyethanaloxime

(E)-2-(3,4-dihydroxyphenyl)-2-methoxyethanaloxime

Conditions
ConditionsYield
With acetate buffer; sodium nitrite at 20℃; for 4h; pH=4; Further byproducts.;A 6%
B 9%
C 10%
D 5%
D-erythrose
583-50-6

D-erythrose

A

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

B

3,4-Dihydroxybenzoic acid
99-50-3

3,4-Dihydroxybenzoic acid

C

1-(3,4-dihydroxyphenyl)ethan-1-one
1197-09-7

1-(3,4-dihydroxyphenyl)ethan-1-one

D

1-[5-(hydroxymethyl)furan-2-yl]ethan-1-one
55087-82-6

1-[5-(hydroxymethyl)furan-2-yl]ethan-1-one

E

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

F

3-methylbenzene-1,2-diol
488-17-5

3-methylbenzene-1,2-diol

Conditions
ConditionsYield
With acetate buffer for 45h; Product distribution; Heating;A 0.04%
B 0.03%
C 0.01%
D 0.15%
E 0.01%
F 0.03%
methanol
67-56-1

methanol

4-benzenesulfonyloxy-3-hydroxy-benzaldehyde

4-benzenesulfonyloxy-3-hydroxy-benzaldehyde

sodium methylate
124-41-4

sodium methylate

A

vanillin
121-33-5

vanillin

B

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

N-Bromosuccinimide
128-08-5

N-Bromosuccinimide

piperonal
120-57-0

piperonal

chloroform
67-66-3

chloroform

A

6-bromopiperonylic acid
60546-62-5

6-bromopiperonylic acid

B

6-bromo-3,4-methylenedioxybenzaldehyde
15930-53-7

6-bromo-3,4-methylenedioxybenzaldehyde

C

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
auch unter Zusatz von Dibenzoylperoxid;
5-dichloromethyl-benzo[1,3]dioxol-2-one
866998-51-8

5-dichloromethyl-benzo[1,3]dioxol-2-one

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With water
With diluted acids
1-methyl-4-nitrosobenzene
623-11-0

1-methyl-4-nitrosobenzene

3-bromo-4-hydroxybenzylaldehyde
2973-78-6

3-bromo-4-hydroxybenzylaldehyde

A

3,4-Dihydroxybenzoic acid
99-50-3

3,4-Dihydroxybenzoic acid

B

4-hydroxy-benzaldehyde
123-08-0

4-hydroxy-benzaldehyde

C

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

D

4-hydroxy-benzoic acid
99-96-7

4-hydroxy-benzoic acid

Conditions
ConditionsYield
at 160℃;
at 190℃;
4-hydroxy-3-(methoxymethoxy)benzaldehyde
65298-98-8

4-hydroxy-3-(methoxymethoxy)benzaldehyde

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With sodium hydrogensulfite und anschliessendes Erhitzen mit wss.H2SO4;
With methanol; mineral acid
hexamethylenetetramine
100-97-0

hexamethylenetetramine

benzene-1,2-diol
120-80-9

benzene-1,2-diol

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With p-dimethylaminonitrosobenzene
5-formyl-2-hydroxybenzaldehyde
3328-70-9

5-formyl-2-hydroxybenzaldehyde

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
With sodium hydroxide; dihydrogen peroxide
3-bromo-4-hydroxybenzylaldehyde
2973-78-6

3-bromo-4-hydroxybenzylaldehyde

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

Conditions
ConditionsYield
at 150 - 200℃; unter Druck;
benzyl chloride
100-44-7

benzyl chloride

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

3,4-dibenzyloxybenzaldehyde
5447-02-9

3,4-dibenzyloxybenzaldehyde

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 120℃; for 15h;100%
With potassium carbonate In N,N-dimethyl-formamide at 120℃; for 15h;99%
With potassium carbonate In N,N-dimethyl-formamide at 20 - 130℃; for 4h;96%
tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

3,4-bis(tert-butyldimethylsilanyloxy)benzaldehyde
99815-16-4

3,4-bis(tert-butyldimethylsilanyloxy)benzaldehyde

Conditions
ConditionsYield
With 1H-imidazole In N,N-dimethyl-formamide100%
With 1H-imidazole; dmap In N,N-dimethyl-formamide at 20℃; for 1h;99%
With 1H-imidazole In dichloromethane98%
1-bromo dodecane
112-29-8

1-bromo dodecane

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

3,4-didecyloxybenzaldehyde
118468-34-1

3,4-didecyloxybenzaldehyde

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 20h; Williamson ether synthesis;100%
With potassium carbonate; potassium iodide In dichloromethane at 90℃; for 16h; Inert atmosphere;97%
Stage #1: 3,4-dihydroxybenzaldehyde With potassium carbonate In N,N-dimethyl-formamide for 0.166667h;
Stage #2: 1-bromo dodecane In N,N-dimethyl-formamide at 100℃; for 12h;
91%
allyl bromide
106-95-6

allyl bromide

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

3,4-diallyloxybenzaldehyde
71186-67-9

3,4-diallyloxybenzaldehyde

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h;100%
With potassium carbonate; sodium iodide In N,N-dimethyl-formamide at 60℃; for 2h;98%
With potassium carbonate; sodium iodide In N,N-dimethyl-formamide at 60℃; for 2h;98%
3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

3,4-dihydroxybenzonitrile
17345-61-8

3,4-dihydroxybenzonitrile

Conditions
ConditionsYield
With hydroxylamine hydrochloride In 1-methyl-pyrrolidin-2-one at 100℃; for 0.5h;100%
With 1-methyl-pyrrolidin-2-one; hydroxylamine hydrochloride at 100℃; for 0.25h; Condensation; microwave irradiation;89%
With formic acid; hydroxylamine hydrochloride; silica gel for 0.0166667h; Irradiation;70 % Chromat.
1,3,5-tris(3-aminopropyl)adamantane
1029302-64-4

1,3,5-tris(3-aminopropyl)adamantane

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

N,N′,N′′-tris(3,4-dihydroxybenzylidene)adamantane-1,3,5-tripropaneamine
1448150-60-4

N,N′,N′′-tris(3,4-dihydroxybenzylidene)adamantane-1,3,5-tripropaneamine

Conditions
ConditionsYield
In ethanol for 24h; Inert atmosphere;100%
dimedone
126-81-8

dimedone

malononitrile
109-77-3

malononitrile

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

2-amino-4-(3,4-dihydroxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile
326918-69-8

2-amino-4-(3,4-dihydroxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile

Conditions
ConditionsYield
With horsetail plant ash In neat (no solvent) at 20℃; for 0.25h; Catalytic behavior; Reagent/catalyst;100%
With 1,4-diaza-bicyclo[2.2.2]octane In 1,4-dioxane for 1.5h; Reflux;97%
With 1-methylimidazolium tricyanomethanide In neat (no solvent) at 20℃; for 0.333333h; Green chemistry;92%
With potassium carbonate In water at 20℃; for 1.16667h; Green chemistry;82%
With dmap at 150℃; for 0.333333h; Microwave irradiation;57%
hydrogen cyanide
74-90-8

hydrogen cyanide

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

(R)-3,4-dihydroxymandelonitrile
190383-25-6

(R)-3,4-dihydroxymandelonitrile

Conditions
ConditionsYield
With (R)-hydroxynitrile lyase from Prunus amygdalus turcomanica Lincz immobilized onto Eupergit CM In tert-butyl methyl ether; dimethyl sulfoxide at 5℃; for 72h; pH=4; Reagent/catalyst; Enzymatic reaction; enantioselective reaction;100%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

malononitrile
109-77-3

malononitrile

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

6-amino-1,4-dihydro-4-(3,4-dihydroxyphenyl)-3methyl-pyran [2,3-c]pyrazole-5-carbonitrile

6-amino-1,4-dihydro-4-(3,4-dihydroxyphenyl)-3methyl-pyran [2,3-c]pyrazole-5-carbonitrile

Conditions
ConditionsYield
Stage #1: ethyl acetoacetate With hydrazine hydrate; C10H21N2(1+)*C2H3O2(1-) at 60℃; for 0.0833333h;
Stage #2: malononitrile; 3,4-dihydroxybenzaldehyde In acetonitrile at 20 - 25℃; for 0.5h; Reagent/catalyst; Temperature;
100%
With hydrazine hydrate In ethanol; water for 0.666667h; Reflux; Green chemistry;82%
3-[2-(4-hydroxyphenyl)ethyl]-2-thioxo-1,3-thiazolidin-4-one

3-[2-(4-hydroxyphenyl)ethyl]-2-thioxo-1,3-thiazolidin-4-one

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

5-(3,4-dihydroxybenzylidene)-3-[2-(4-hydroxyphenyl)ethyl]-2-thioxothiazolidine-4-one

5-(3,4-dihydroxybenzylidene)-3-[2-(4-hydroxyphenyl)ethyl]-2-thioxothiazolidine-4-one

Conditions
ConditionsYield
With ammonium acetate; acetic acid Reflux;100%
BARBITURIC ACID
67-52-7

BARBITURIC ACID

3,4-dihydroxybenzaldehyde
139-85-5

3,4-dihydroxybenzaldehyde

5-(3,4-dihydroxybenzylidene)-2,4,6(1H,3H,5H)-pyrimidinetrione
191167-05-2

5-(3,4-dihydroxybenzylidene)-2,4,6(1H,3H,5H)-pyrimidinetrione

Conditions
ConditionsYield
In ethanol; water at 80℃; for 8h;99.3%
In ethanol; water at 80℃; for 8h;99.3%
With ammonium chloride In water at 20℃; for 0.5h;94%
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