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Cas:3068-32-4
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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
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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
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inquiry2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide CAS 3068-32-4 Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed
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inquiry1. 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
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inquiryProduct Name: 2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide Synonyms: acetobromo-ó-d-galactose;alpha-d-galactopyranosylbromide,tetraacetate;BROMO-2,3,4,6-TETRA-O-ACETYL-ALPHA-D-GALACTOPYRANOSE;BROMO 2,3,4,6-TETRA-O-ACE
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inquiryOur advantages: 1. High quality and competitive price: 1) Standard: BP/USP/EP/ enterprise standard 2) All purity ≥99% 3) We are manufacturers and can provide high quality products at factory prices. 2. Fast and safe delivery 1) The package c
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inquiryEnglish name: tetra-O-acetyl-α-D-galactopyranosyl bromide CAS Number: 3068-32-4 Molecular formula: C14H19BrO9 Molecular weight: 411.2 Appearance: white powder Storage:Store in cool and dry place, away from sun light. Package: 25kgs/drum Ap
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inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:powder Storage:Store in sealed containers at cool & dry pla
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inquiry2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide CAS:3068-32-4 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specia
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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
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inquiryHenan 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
superior quality moderate price & quick delivery Appearance:powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used to make other chemi
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inquiryJ&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
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inquiryWhy Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu
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inquiryZibo 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
Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:3068-32-4
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inquiryProduct name: 2,3,4,6-Tetra-O-Acetyl-Alpha-D-Galactopyranosyl Bromide CAS No.:3068-32-4 Molecule Formula:C14H19BrO9 Molecule Weight:411.19 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise S
Cas:3068-32-4
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inquiryProduct Name: 2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide Synonyms: acetobromo-ó-d-galactose;alpha-d-galactopyranosylbromide,tetraacetate;2,3,4,6-Tetra-O-acetyl-a-D-galacopyranosyl bromide;BroMo 2,3,4,6-Tetra-O-acetyl-α
Cas:3068-32-4
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inquiryShandong 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
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inquiry1.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
Cas:3068-32-4
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inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
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inquiryStock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:3068-32-4
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inquiryfactory Storage:Shading, sealed and preserved. Package:Grams, Kilograms Application:An organic synthetic intermediate used Transportation:According to customer request Port:Qingdao
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inquiryhigh 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
β-D-galactose peracetate
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid at 0 - 20℃; | 100% |
With hydrogen bromide In dichloromethane | 100% |
With bismuth(III) bromide; triethyl-bromo-silane In dichloromethane at 20℃; for 3h; | 100% |
penta-O-acetyl-α-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid In dichloromethane | 100% |
With hydrogen bromide; acetic acid at 20℃; for 1.5h; | 99% |
With hydrogen bromide; acetic acid at 20℃; for 18h; Inert atmosphere; | 95% |
D-galactose pentaacetate
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid at 0 - 10℃; | 100% |
With bismuth(III) bromide; trimethylsilyl bromide In dichloromethane Ambient temperature; | 99% |
With bismuth(III) bromide; trimethylsilyl bromide In dichloromethane at 20℃; | 99% |
D-Galactose
acetic acid
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With Acetyl bromide at 20℃; | 100% |
4-methoxyphenyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With Acetyl bromide; zinc dibromide In dichloromethane at 22℃; for 24h; | 98% |
D-Galactose
acetic anhydride
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Stage #1: D-Galactose With Acetyl bromide In methanol Stage #2: acetic anhydride With acetic acid | 95% |
With Acetyl bromide In methanol; acetic acid at 20℃; Darkness; | 90% |
With phosphorus; perchloric acid; bromine | 81.2% |
1,2,3,4,6-penta-O-acetyl-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide In dichloromethane; acetic acid at 0 - 20℃; | 95% |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With iodine(I) bromide In dichloromethane; toluene at 20℃; for 1h; Molecular sieve; Inert atmosphere; | 95% |
α-D-galactopyranose
acetic anhydride
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Stage #1: α-D-galactopyranose; acetic anhydride With perchloric acid at 5 - 45℃; Inert atmosphere; Stage #2: With phosphorus; bromine at 20 - 30℃; Inert atmosphere; | 94% |
2,3,4,6-tetra-O-acetyl-α/β-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With pyridine; (PhO)3P*Br2 In dichloromethane for 0.166667h; | 90% |
With tris(2,2'-bipyridyl)ruthenium dichloride; carbon tetrabromide; tetrabutylammomium bromide In N,N-dimethyl-formamide Schlenk technique; Sealed tube; Inert atmosphere; Irradiation; | 86% |
With hydrogen bromide; acetic anhydride In dichloromethane at 20℃; for 4h; | 85% |
4-methoxyphenyl 2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-β-D-glucopyranoside
A
2,3,6,2',3',4',6'-hepta-O-acetyl-lactosyl bromide
B
2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide
C
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With Acetyl bromide; zinc dibromide In dichloromethane at 22℃; Yields of byproduct given; | A 82% B n/a C n/a |
methyl 2,3,4,6-tetra-O-acetyl-α-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With acyl bromide; zinc dibromide In dichloromethane for 12h; Heating; | 74% |
With trimethylsilyl bromide; zinc dibromide In dichloromethane for 24h; Ambient temperature; | 41% |
1,2,3,4,6-penta-O-acetyl-β-D-galactopyranoside
acetic anhydride
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid at 20℃; for 3.16667h; Inert atmosphere; | 71% |
D-Galactose
acetic anhydride
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With perchloric acid anschl. mit Phosphor, Brom und Wasser; |
1-deoxy-1-(phenylthio)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With iodine(I) bromide In dichloromethane at 0℃; for 0.166667h; Yield given; |
isopropyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-galactopiranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With iodine(I) bromide In dichloromethane at 0℃; for 0.166667h; Yield given; |
methyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With iodine(I) bromide In dichloromethane at 0℃; for 0.166667h; Yield given; | |
With iodine(I) bromide In dichloromethane at 0℃; for 0.166667h; Bromination; |
D-Galactose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: pyridine 2: HBr / acetic acid View Scheme | |
Multi-step reaction with 2 steps 1: sodium acetate / 2.25 h / 100 °C / air 2: hydrogen bromide; acetic acid / 3.17 h / 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: pyridine / 20 °C 2: acetic anhydride; hydrogen bromide; acetic acid / dichloromethane / 20 °C View Scheme |
1',2',3',6',2,3,4,6-octa-O-acetyl-β-D-lactose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 90 percent / BF3*Et2O / CH2Cl2 2: AcBr, ZnBr2 / CH2Cl2 / 22 °C View Scheme |
2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-1-C-sulfonamide
A
C14H20BrNO11S
B
C14H20BrNO11S
C
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With bromine; potassium carbonate In chloroform for 4h; Reflux; Heat lamp; |
α-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: pyridine / 20 h / 20 °C / Inert atmosphere 2: tert-butyl alcohol; hydrogen bromide / acetic acid / 0 - 20 °C View Scheme |
β-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: pyridine / 24 h / 20 °C 2: acetic anhydride; hydrogen bromide; acetic acid / dichloromethane / 24 h / 0 - 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: pyridine 2: hydrogen bromide; acetic acid / dichloromethane / 3 h / 20 °C View Scheme |
D-galactose pentaacetate
A
acetobromogalactose
B
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid at 4℃; |
N-Acetyl-D-glucosamine
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 20 °C 2: acetic anhydride; hydrogen bromide; acetic acid / dichloromethane / 20 °C View Scheme |
2,3,4,6-tetra-O-acetyl-β-D-galactopyranose
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid In dichloromethane at 20℃; for 3h; |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
(2R,3S,4S,5R,6R)-2-(acetoxymethyl)-6-azidotetrahydro-2H-pyran-3,4,5-triyl triacetate
Conditions | Yield |
---|---|
With sodium azide; tetra(n-butyl)ammonium hydrogensulfate; sodium hydrogencarbonate In dichloromethane | 100% |
With sodium azide; tetra(n-butyl)ammonium hydrogensulfate; sodium hydrogencarbonate In dichloromethane; water at 20℃; | 100% |
With tetramethylguanidinum azide In nitromethane at 25℃; for 4h; | 99% |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With silver perchlorate; N-ethyl-N,N-diisopropylamine In benzene at 20℃; for 1h; Molecular sieve; Inert atmosphere; Darkness; | 100% |
With N-ethyl-N,N-diisopropylamine; silver(l) oxide In benzene for 6h; Heating; |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoro-undecanoic acid (4-mercapto-phenyl)-methyl-amide
Conditions | Yield |
---|---|
With sodium carbonate In water; ethyl acetate at 20℃; for 2h; | 100% |
(E)-5-[2-4-(hydroxyphenyl)ethenyl]-1,3-benzenediol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With 2,4,6-trimethyl-pyridine; silver carbonate; molecular sieve, 3 A In dichloromethane; acetonitrile at 25℃; for 72h; Under anhydrous N2; | 100% |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
2,3,4,6-tetra-O-acetyl-1,5-anhydro-D-galactitol
Conditions | Yield |
---|---|
With Cp2Ti(BH4) In tetrahydrofuran for 0.75h; Ambient temperature; | 99% |
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene for 4h; Reflux; | 97% |
With hydrogen; triethylamine; palladium on activated charcoal In ethyl acetate at 20℃; under 760.051 Torr; for 3h; | 96% |
Conditions | Yield |
---|---|
With 2,4,6-trimethyl-pyridine; 4 A molecular sieve; mercury dibromide In nitromethane; chloroform; benzene for 22h; Ambient temperature; | 99% |
3-trifluoromethyl-4-nitrophenol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With tetrabutylammomium bromide In dichloromethane; water at 50℃; for 1h; pH=8 - 9; | 99% |
2-nitro-4-trifluoromethylphenol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With tetrabutylammomium bromide In dichloromethane; water at 50℃; for 1h; pH=8 - 9; | 99% |
2-fluoro-4-nitrophenol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With tetrabutylammomium bromide In dichloromethane; water at 50℃; for 1h; pH=8 - 9; | 99% |
With sodium hydroxide; tetrabutylammomium bromide In dichloromethane at 35℃; for 4h; | 77% |
With tetrabutylammomium bromide; sodium hydroxide |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With sodium methylate In methanol for 18h; | 99% |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 18℃; for 12h; Inert atmosphere; regioselective reaction; | 99% |
With potassium carbonate In N,N-dimethyl-formamide at 25℃; for 12h; Inert atmosphere; | |
With potassium carbonate In N,N-dimethyl-formamide at 25℃; for 12h; Inert atmosphere; |
methanol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
methyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranoside
Conditions | Yield |
---|---|
With triethylamine; 1-butyl-3-methylimidazolium trifluoromethanesulfonimide at 42℃; for 1h; Kinetics; Reagent/catalyst; Temperature; | 98% |
With 4 A molecular sieve; iodine for 1h; Ambient temperature; | 95% |
With silver carbonate | |
With phenylmercuric acetate |
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
triacetyl-D-galactal
Conditions | Yield |
---|---|
With edetate disodium; chromium(II) acetate In water; ethyl acetate for 18h; Ambient temperature; | 98% |
With tetrakis(acetato)dichromium(II) dihydrate; edetate disodium In water; ethyl acetate for 18h; pH=5.0; | 97% |
With β‐cyclodextrin; zinc In water at 20℃; for 0.5h; Sonication; | 93% |
2-benzyloxy-3-hexadecyloxy-1-propanol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Acetic acid (2R,3S,4S,5R,6R)-3,5-diacetoxy-2-acetoxymethyl-6-(2-benzyloxy-3-hexadecyloxy-propoxy)-tetrahydro-pyran-4-yl ester
Conditions | Yield |
---|---|
With silver(l) oxide | 98% |
thiophenol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
1-deoxy-1-(phenylthio)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose
Conditions | Yield |
---|---|
With sodium hydroxide; tetrabutylammomium bromide In benzene for 0.5h; Ambient temperature; | 98% |
With potassium carbonate for 0.5h; Neat (no solvent); Ball milling; | 95% |
With triethylamine In acetonitrile for 1h; Ambient temperature; | 82% |
With tetra(n-butyl)ammonium hydrogensulfate; sodium carbonate In ethyl acetate | 75% |
With tetrabutylammomium bromide; sodium carbonate In dichloromethane; water at 20℃; for 4h; stereoselective reaction; |
allyl 2-acetamido-2-deoxy-4,6-O-benzylidene-α-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
(2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl)-(1-3)-2-acetamido-4,6-O-benzylidene-2-deoxy-α-D-galactopyranoside
Conditions | Yield |
---|---|
With mercury(II) cyanide In nitromethane; benzene at 20℃; for 18h; | 98% |
In nitromethane; benzene at 25℃; | 78% |
With mercury(II) cyanide In nitromethane; benzene at 50℃; | 65% |
5-Nitrosalicylaldehyde
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With silver(l) oxide In acetonitrile for 4h; Darkness; | 98% |
With silver(l) oxide In acetonitrile for 4h; Darkness; | 98% |
With silver(l) oxide In acetonitrile at 20℃; for 22.5h; Inert atmosphere; | 87% |
methyl beta-D-galactopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
methyl 3-O-(2’,3’,4’,6’-tetra-O-acetyl-β-D-galactopyranosyl)-β-D-galactopyranoside
Conditions | Yield |
---|---|
Stage #1: methyl beta-D-galactopyranoside With diphenyltin(IV) dichloride In tetrahydrofuran at 20℃; for 0.166667h; Stage #2: 1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside With 5,5'-dimethyl-2,2'-bipyridine; silver(l) oxide In tetrahydrofuran at 20 - 45℃; for 24h; Koenigs-Knorr Glycosidation; stereoselective reaction; | 98% |
monobenzyldithiocarbamate sodium
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-N-benzyl dithiocarbamate
Conditions | Yield |
---|---|
In acetone at 20℃; for 2h; | 98% |
cyclohexanol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
(2R,3S,4S,5R,6R)-2-(acetoxymethyl)-6-(cyclohexyloxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate
Conditions | Yield |
---|---|
With silver carbonate In dichloromethane | 97% |
2-sulfanylpyrimidine
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
A
Acetic acid (2S,3R,4S,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(pyrimidin-2-ylsulfanyl)-tetrahydro-pyran-3-yl ester
B
2,2'-(methylenebis(thio))bis(pyrimidine)
C
chloro(pyrimidin-2-ylthio)methane
Conditions | Yield |
---|---|
With tetra(n-butyl)ammonium hydrogensulfate; sodium carbonate In dichloromethane for 1h; Ambient temperature; | A 97% B n/a C n/a |
para-thiocresol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
4-methylphenyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-galactopyranoside
Conditions | Yield |
---|---|
With potassium carbonate for 0.5h; Neat (no solvent); Ball milling; | 97% |
With bismuth subcarbonate In neat (no solvent) for 2h; Molecular sieve; Milling; | 88% |
With tetrabutylammomium bromide; sodium carbonate In dichloromethane; water at 20℃; for 4h; stereoselective reaction; |
thiourea
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
2,3,4,6-tetra-O-acetylgalactopyranosyl-1-β-pseudothiourea hydrobromide
Conditions | Yield |
---|---|
In acetone at 70℃; for 16h; | 96% |
With isopropyl alcohol |
methyl L-fucopyranoside
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With arylboronic promoter; tetraethylammonium iodide; silver carbonate; 4 A molecular sieve In tetrahydrofuran at 0 - 50℃; | 96% |
With [2-(1-methyl-1H-imidazol-2-yl)phenyl]boronic acid; silver(l) oxide In acetonitrile at 30℃; for 24h; Koenigs-Knorr Glycosidation; Inert atmosphere; regioselective reaction; | 93% |
2-chloro-5-(trifluoromethyl)phenol
1-bromo-1-deoxy-2,3,4,6-tetra-O-acetyl-a-D-galactopyranoside
Conditions | Yield |
---|---|
With tetrabutylammomium bromide In dichloromethane; water at 50℃; for 1h; pH=8 - 9; | 96% |
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