Product Advantages: 1. Protocatechic acid is a competitive product of our company, and free samples can be applied. 2. It is available in stock for quick shipment. 3. Biological synthesis, natural, healthy, can be safely used in medicine, dyes, fe
Cas:99-50-3
Min.Order:1 Kilogram
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inquirybulk production Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical manufacturing for overseas customers, in the field of API, pharmaceutical intermediates, chemical intermediates, fine ch
Cas:99-50-3
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inquiryHigh quality, best service,competitive price are our principle 1.Low price & high quality products (G-KG) & first-class service are waiting for our clients 2.Professional transport team to ensure the goods safety and on time arrived your
Cas:99-50-3
Min.Order:1 Kilogram
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inquiryProduct description: Product name 3,4-Dihydroxybenzoic acid CAS number 99-50-3 Assay ≥99% Appearance Off-white to yellowish powder Capacity 200mt/year Application Pharmaceuti
Cas:99-50-3
Min.Order:10 Gram
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inquiryAs 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 services. DayangChem can provide different quantities of custom synthesis ch
Cas:99-50-3
Min.Order:1 Kilogram
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inquiryItems Limits Results Quantity 1.5kg 1.57kg Appearance White solid
Cas:99-50-3
Min.Order:1 Gram
FOB Price: $100.0 / 500.0
Type:Trading Company
inquiryWelcome 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
Cas:99-50-3
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inquirySuperiority KONO is a leading manufacturer and supplier of chemicals in China. We develop ,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals. We could give you: 1.Best quality in your r
Cas:99-50-3
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inquiryWe 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 CMO
Cas:99-50-3
Min.Order:1 Gram
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inquiry1 Factory price 2 High quality 3 Good service chengdu and import and export trade co., LTD., who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw m
Cas:99-50-3
Min.Order:25 Kilogram
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Type:Manufacturers
inquiryHerbal Extracts Protocatechuic Acid 98% powder Xi'an Quanao Biotech Co., Ltd. is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extrac
Cas:99-50-3
Min.Order:100 Kilogram
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Type:Manufacturers
inquiry3,4-Dihydroxybenzoic Acid[CAS:99-50-3] HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture. With about ten years of business experiences on the marketing & distribut
Cas:99-50-3
Min.Order:200 Gram
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inquiryThe 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
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
Cas:99-50-3
Min.Order:1 Gram
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inquiry99-50-3 - Physico-chemical Properties Molecular Formula C7H6O4 Molar Mass 154.12 Density 1.54 Melting Point 197-200 °C (dec.) (lit.) Boling Point 237.46°C (rough estimate)
Cas:99-50-3
Min.Order:1 Gram
FOB Price: $30.0 / 40.0
Type:Lab/Research institutions
inquiryShanghai 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
Cas:99-50-3
Min.Order:1 Kilogram
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Type:Manufacturers
inquiryOur 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
Cas:99-50-3
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
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inquiryTIANFUCHEM--99-50-3--High purity 3,4-Dihydroxybenzoic acid factory price Our company was built in 2009 with an ISO certificate.In the past 10 years, we have grown up as a famous fine chemicals supplier in China And we had established stabl
Cas:99-50-3
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Type:Lab/Research institutions
inquiryWITH 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
Cas:99-50-3
Min.Order:10 Gram
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Type:Trading Company
inquiryOur 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
Superlist Name:3,4-Dihydroxybenzoic acid Molecular Formula:C7H6O4 CAS No.: 99-50-3 Purity:99% Synonyms:Protocatechuic acid Molecular Weight:154.12 Appearance:white powder Appearance: white powder Storage: Preserve in well-closed, light-
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 or off-white powder Storage:Store in sealed containers
Cas:99-50-3
Min.Order:100 Gram
Negotiable
Type:Other
inquiryAppearance:beige to brown?powder Storage:Store below +30°C. Package:25kg/drum Application:A phenolic acid antioxidant and chemopreventive agent Transportation:Express/Sea/Air Port:any port in china
Cas:99-50-3
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Lab/Research institutions
inquiry1.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
Cas:99-50-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryBasic Information Synonym 3,4-DIHYDROXYBENZOIC ACID/Protocatechuic acid/Protocatehuic acid/4-Carboxy-1,2-dihydroxybenzene CAS No. 99-50-3 Formula C7H6O4 Molecular Weight 154.12 g/mol Appa
Cas:99-50-3
Min.Order:1 Gram
FOB Price: $16.0 / 160.0
Type:Trading Company
inquiryOverview of Our Factories Our Factories production lines Our Factories R&D ability Our Factories warehouse Our Factorie
Cas:99-50-3
Min.Order:1 Kilogram
FOB Price: $30.0 / 35.0
Type:Lab/Research institutions
inquiryHubei CuiRan Biotechnology Co., Ltd is a leading company in the research, development, manufacture and marketing of High Quality Phytochemicals and Extracts(especially Active Ingredients from Traditional Chinese Medicine,Traditional Chinese Medicine)
Cas:99-50-3
Min.Order:10 Milligram
Negotiable
Type:Lab/Research institutions
inquiryOur 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
Cas:99-50-3
Min.Order:1 Kilogram
FOB Price: $70.9 / 78.2
Type:Trading Company
inquiryProtocatechuic acid CAS:99-50-3 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 intermed
Cas:99-50-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, 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
Cas:99-50-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryConditions | Yield |
---|---|
With aluminium(III) iodide; diisopropyl-carbodiimide In acetonitrile at 80℃; for 18h; | 100% |
With aluminium(III) iodide; diisopropyl-carbodiimide In acetonitrile at 80℃; for 18h; | 100% |
With 1,4-dithio-D,L-threitol; phosphite dehydrogenase; phosphite ion; iron(II) sulfate; NADH In dimethyl sulfoxide at 30℃; for 7h; pH=7.5; Catalytic behavior; Reagent/catalyst; Solvent; Enzymatic reaction; | 77% |
Conditions | Yield |
---|---|
With potassium hydroxide In water at 260℃; for 0.75h; | 94% |
With potassium carbonate durch Schmelzen; | |
With potassium hydroxide durch Schmelzen; | |
With potassium hydroxide at 250℃; |
Conditions | Yield |
---|---|
With aluminium(III) iodide; diisopropyl-carbodiimide In acetonitrile at 80℃; for 18h; | 89% |
Conditions | Yield |
---|---|
With iodine; oxygen; dimethyl sulfoxide at 80℃; for 12h; | 84% |
4-hydroxy-3-methoxybenzoic acid methyl ester
A
3,4-Dihydroxybenzoic acid
B
3,4-dihydroxybenzoic acid methyl ester
Conditions | Yield |
---|---|
With aluminium(III) iodide; ethyl acetate; diisopropyl-carbodiimide In acetonitrile at 80℃; for 5h; Temperature; | A 14% B 72% |
With aluminium(III) iodide; diisopropyl-carbodiimide In acetonitrile at 40℃; for 18h; Temperature; Overall yield = 89 %; Overall yield = 0.684 g; | A 64% B 31% |
Conditions | Yield |
---|---|
With dihydrogen peroxide In water; acetonitrile at 35℃; for 12h; Dakin Phenol Oxidation; | 71% |
acetic anhydride
3',4'-dihydroxy-7-dimethoxyflavylium chloride
A
3,4-Dihydroxybenzoic acid
B
4-methoxysalicylic acid
Conditions | Yield |
---|---|
With ruthenium(IV) oxide; sodium periodate 1) 5 h, room temp., pyridine; 2) acetic ester, water, 20 min : decomposition reaction; | A 70% B 67% |
3-hydroxy-4-methoxybenzoate
A
3,4-Dihydroxybenzoic acid
B
3,4-dihydroxybenzoic acid methyl ester
Conditions | Yield |
---|---|
With aluminium(III) iodide; diisopropyl-carbodiimide In acetonitrile at 40℃; for 18h; | A 64% B 31% |
3-oxo-cyclohexanecarboxylic acid
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With iodine; oxygen; dimethyl sulfoxide at 80℃; for 12h; regioselective reaction; | 63% |
(-)-3-dehydroshikimic acid
A
3,4-Dihydroxybenzoic acid
B
3,4,5-trihydroxybenzoic acid
Conditions | Yield |
---|---|
With copper diacetate In water; acetic acid at 40℃; for 36h; Oxidation; aromatization; | A 0.7% B 62% |
With copper diacetate; oxygen; zinc(II) oxide In acetic acid at 50℃; under 760.051 Torr; for 14h; Kinetics; Product distribution; Further Variations:; Reagents; Oxidation; aromatization; |
Conditions | Yield |
---|---|
With potassium bromate; hydrogenchloride; potassium bromide In water for 12h; Time; | 55% |
With potassium carbonate durch Schmelzen; | |
With potassium hydroxide at 150 - 190℃; Ausschluss von Sauerstoff; |
methanol
3-dehydroquinic acid
A
3,4-Dihydroxybenzoic acid
B
methyl (4S,5R)-4,5-dihydroxy-3-oxo-1-cyclohexene-1-carboxylate
C
methyl 3-dehydroquinate
Conditions | Yield |
---|---|
With Amberlite IR 120 for 1.5h; Heating; | A 30% B 20% C 50% |
A
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With 2,2'-azobis-(2,4-dimethylvaleronitrile) In water; acetonitrile at 60℃; for 6h; | A 34% B 13.6% C 15% |
Conditions | Yield |
---|---|
With potassium superoxide; tetraethylammonium bromide In N,N-dimethyl-formamide at 20℃; for 18h; | 17% |
With potassium carbonate beim Schmelzen; | |
With potassium carbonate | |
With potassium hydroxide | |
With potassium hydroxide Heating; |
(-)-3-dehydroshikimic acid
A
3,4-Dihydroxybenzoic acid
B
tricarallylic acid
C
3,4,5-trihydroxybenzoic acid
D
dihydrogallic acid
E
2-hydroxyresorcinol
Conditions | Yield |
---|---|
With air; Na1.5H1.5PO4 at 40℃; for 50h; Rate constant; Mechanism; other oxidant, var. time; | A 12 % Spectr. B 14 % Spectr. C 13% D n/a E 3 % Spectr. |
Conditions | Yield |
---|---|
With peroxygenase; dihydrogen peroxide In acetonitrile at 20℃; for 0.5h; pH=5; pH-value; Enzymatic reaction; | 12.4% |
With Aspergillus carbonarius peroxygenase gene; dihydrogen peroxide; ascorbic acid In aq. phosphate buffer; acetonitrile at 20℃; for 0.25h; pH=6; Catalytic behavior; Enzymatic reaction; | 1% |
With potassium peroxomonosulphate Kochen des Reaktionsproduktes mit verd. Salzsaeure; | |
Multi-step reaction with 2 steps 1: bromine 2: concentrated KOH-solution View Scheme |
methanol
caffeic acid
A
3,4-Dihydroxybenzoic acid
B
3,4-dihydroxybenzaldehyde
Conditions | Yield |
---|---|
With acetate buffer; sodium nitrite at 20℃; for 4h; pH=4; Further byproducts.; | A 6% B 9% C 10% D 5% |
A
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With water; dihydrogen peroxide In acetonitrile at 40℃; for 8h; Mechanism; Reagent/catalyst; Solvent; Time; | A 9% B n/a C n/a |
D-erythrose
A
5-hydroxymethyl-2-furfuraldehyde
B
3,4-Dihydroxybenzoic acid
C
1-(3,4-dihydroxyphenyl)ethan-1-one
D
1-[5-(hydroxymethyl)furan-2-yl]ethan-1-one
E
3,4-dihydroxybenzaldehyde
F
3-methylbenzene-1,2-diol
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With tetrachloromethane; chlorine Einwirkung im Sonnenlicht und Verseifen des entstandenen Chlorids mit Wasser; |
Conditions | Yield |
---|---|
bei der Kalischmelze; | |
Multi-step reaction with 3 steps 1: KOH; water 2: K2cr2O7; glacial acetic acid / 100 °C 3: hydriodic acid / 120 - 130 °C / im geschlossenen Rohr View Scheme |
Conditions | Yield |
---|---|
bei der Kalischmelze; |
Conditions | Yield |
---|---|
With hydrogenchloride at 170℃; im geschlossenen Rohr; | |
With water at 210℃; im geschlossenen Rohr; | |
With aluminium trichloride; chlorobenzene |
2-oxo-benzo[1,3]dioxole-5-carboxylic acid
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With water | |
With salt solution |
1-methyl-4-nitrosobenzene
3-bromo-4-hydroxybenzylaldehyde
A
3,4-Dihydroxybenzoic acid
B
4-hydroxy-benzaldehyde
C
3,4-dihydroxybenzaldehyde
D
4-hydroxy-benzoic acid
Conditions | Yield |
---|---|
at 160℃; | |
at 190℃; |
(2,4‐dihydroxyphenyl)(3,4,5‐trihydroxyphenyl)methanone
A
3,5-dihydroxyphenol
B
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With sulfuric acid at 120℃; | |
With potassium hydroxide |
(2,4‐dihydroxyphenyl)(3,4,5‐trihydroxyphenyl)methanone
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With potassium hydroxide | |
With sulfuric acid at 120℃; | |
With hydrogenchloride at 120℃; |
Conditions | Yield |
---|---|
bei der Kalischmelze; |
4-ethoxy-3-hydroxybenzaldehyde
4-ethoxy-3-methoxybenzoic acid
A
3,4-Dihydroxybenzoic acid
B
4-ethoxy-3-hydroxy-benzoic acid
Conditions | Yield |
---|---|
With hydrogen bromide Reaktion ueber mehrere Stufen; |
Conditions | Yield |
---|---|
With thionyl chloride Heating; | 100% |
With sulfuric acid for 8h; Reflux; | 100% |
With sulfuric acid under 760.051 Torr; Reflux; | 100% |
3,4-Dihydroxybenzoic acid
Cyclohexyl isocyanide
4-methoxy-benzylamine
para-tert-butoxycarbonyloxybenzaldehyde
Conditions | Yield |
---|---|
Stage #1: 4-methoxy-benzylamine; para-tert-butoxycarbonyloxybenzaldehyde In ethanol; 2,2,2-trifluoroethanol for 4h; Inert atmosphere; Stage #2: 3,4-Dihydroxybenzoic acid; Cyclohexyl isocyanide In ethanol; 2,2,2-trifluoroethanol for 48h; Inert atmosphere; | 100% |
Conditions | Yield |
---|---|
With sulfuric acid Heating; | 99% |
With sulfuric acid at 50℃; for 3h; | 98% |
With sulfuric acid | 98% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 99% |
3,4-Dihydroxybenzoic acid
benzyl chloride
3,4-(bisbenzyloxy)benzoic acid benzyl ester
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 60℃; Inert atmosphere; | 98% |
With potassium carbonate In N,N-dimethyl-formamide at 60℃; Inert atmosphere; | 98% |
With sodium carbonate In N,N-dimethyl-formamide for 48h; Reflux; | 85% |
With potassium carbonate In N,N-dimethyl-formamide at 20 - 85℃; for 12h; Inert atmosphere; |
3,4-Dihydroxybenzoic acid
tert-butyldimethylsilyl chloride
3,4‐bis(tert‐butyldimethylsilyloxy)benzoic acid
Conditions | Yield |
---|---|
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 0.5h; | 98% |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 4h; Inert atmosphere; | 76.7% |
With 1H-imidazole In N,N-dimethyl-formamide for 66h; Inert atmosphere; | 75% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 96% |
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 96% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 96% |
3,4-Dihydroxybenzoic acid
N,N'-Dibenzylethylenediamine
1,4-dibenzyl-1,2,3,4-tetrahydroquinoxaline-6,7-dione
Conditions | Yield |
---|---|
In aq. phosphate buffer at 20℃; pH=7; Electrochemical reaction; | 95.5% |
In aq. phosphate buffer; acetonitrile at 25℃; for 20h; pH=7.0; Reagent/catalyst; Electrochemical reaction; |
3,4-Dihydroxybenzoic acid
N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine
Fmoc-L-Arg-OH
Conditions | Yield |
---|---|
Stage #1: N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In 1-methyl-pyrrolidin-2-one for 3h; Stage #2: With piperidine In 1-methyl-pyrrolidin-2-one Stage #3: 3,4-Dihydroxybenzoic acid; Fmoc-L-Arg-OH Further stages; | 95.215% |
Conditions | Yield |
---|---|
With pyridine at 0℃; for 2h; Inert atmosphere; | 95% |
With sulfuric acid at 70℃; | 86.5% |
for 2h; Heating; | 84% |
Conditions | Yield |
---|---|
With sulfuric acid In tetrahydrofuran at 45 - 65℃; for 120 - 240h; Darkness; Molecular sieve; | 95% |
With dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; | 36% |
With dicyclohexyl-carbodiimide In tetrahydrofuran | |
With dicyclohexyl-carbodiimide In 1,4-dioxane at 5℃; for 48h; |
3,4-Dihydroxybenzoic acid
tert-butyl alcohol
3,4-dihydroxy-benzoic acid tert-butyl ester
Conditions | Yield |
---|---|
With dmap at 20℃; for 72h; | 95% |
3,4-Dihydroxybenzoic acid
6,8-dichloro-2,3,4,9-tetrahydro-1H-carbazole
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In acetonitrile for 0.0833333h; Cooling with ice; | 95% |
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In acetonitrile for 0.0833333h; Cooling with ice; | 95% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With methanesulfonic acid; di-tert-butyl peroxide; iron phthalocyanine; acetic acid In acetonitrile for 0.0833333h; Cooling with ice; | 95% |
3,4-Dihydroxybenzoic acid
ethyl 1,3,4,9‐tetrahydro‐2H‐pyrido[3,4‐b]indole‐2‐carboxylate
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In acetonitrile for 0.0833333h; Cooling with ice; | 95% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In acetonitrile for 0.25h; Cooling with ice; | 95% |
3,4-Dihydroxybenzoic acid
6,8-dichloro-2,3,4,9-tetrahydro-1H-carbazole
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 95% |
3,4-Dihydroxybenzoic acid
8-chloro-2,3,4,9-tetrahydro-1H-carbazole
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 95% |
3,4-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.25h; | 95% |
3,4-Dihydroxybenzoic acid
ethyl 1,3,4,9‐tetrahydro‐2H‐pyrido[3,4‐b]indole‐2‐carboxylate
Conditions | Yield |
---|---|
With tert.-butylhydroperoxide; methanesulfonic acid; iron(II) phthalocyanine; acetic acid In water; acetonitrile at 5℃; for 0.0833333h; | 95% |
Conditions | Yield |
---|---|
With sulfuric acid In tetrahydrofuran at 45 - 65℃; for 120 - 240h; Darkness; Molecular sieve; | 94% |
With dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 20h; | 81% |
With dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; | 33% |
With dicyclohexyl-carbodiimide In 1,4-dioxane at 5℃; for 48h; | |
With sulfuric acid Fischer-Speier Esterification; |
3,4-Dihydroxybenzoic acid
benzyl bromide
3,4-(bisbenzyloxy)benzoic acid benzyl ester
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide Inert atmosphere; | 94% |
With potassium carbonate In N,N-dimethyl-formamide for 20h; Inert atmosphere; | 92% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; | 91% |
Conditions | Yield |
---|---|
With thionyl chloride Inert atmosphere; Reflux; | 94% |
Conditions | Yield |
---|---|
With triethylamine In acetonitrile Reflux; | 93.4% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In 1,4-dioxane at 5℃; for 48h; | 93% |
With sulfuric acid In tetrahydrofuran at 45 - 65℃; for 120 - 240h; Darkness; Molecular sieve; | 82% |
With dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; | 64% |
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