Dayangchem’s 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. DayangChem can provide different quantiti
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inquiryMethyl 2-hydroxyisobutyrate Basic information Product Name: Methyl 2-hydroxyisobutyrate Synonyms: 2-hydroxy-2-methyl-propanoicacimethylester;2-hydroxyisobutyricacidmethylester(alpha-);La
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inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1)
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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.
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Min.Order:1 Kilogram
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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
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
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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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inquiryOur Advantages Production: Advanced chemical equipment with years of experience Staffs for producing various extract products. Quality Control:A complete set of Testing Professional and Analysis Equipment ensures the Quality Requirements and Specif
Cas:2110-78-3
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inquirymethyl 2-hydroxy-2-methylpropanoateAppearance:white powder Storage:In Shade Package:according to customers' requirements Application:pharmaceutical intermediate Transportation:By air(EMS or EUB or FedEx or TNT ect...) or by sea(FOB or CIF or CNF ect.
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,
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Min.Order:1 Gram
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inquiryWe product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Product Name:Methyl 2-hydroxyisobutyrate CAS No:211
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inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
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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
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inquiryName: Methyl 2-hydroxyisobutyrate Synonyms: Methyl 2-methyllactate CAS: 2110-78-3 MF: C5H10O3 Appearance: Colorless liquid Storage:Preserve in well-closed, light-resistant and airtight containers. Package:25kg/drum Application:Pharmaceutical Inter
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier
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inquiryhigh quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
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Cas:2110-78-3
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Type:Other
inquiryConditions | Yield |
---|---|
zirconium(IV) oxide at 190℃; under 759.826 Torr; for 24h; Product distribution / selectivity; | 95% |
With yttria-stabilized zirconia at 220℃; under 45004.5 Torr; Catalytic behavior; Concentration; Reagent/catalyst; Temperature; | 34.9% |
With lead(IV) tetraacetate at 200℃; for 1h; in a sealed ampul; | 31% |
Conditions | Yield |
---|---|
With 4-(dihydroxyboranyl)-1-methylpyridin-1-ium iodide for 15h; Heating; | 92% |
With zinc(II) chloride at 60℃; for 6h; sealed tube; | 83% |
With thionyl chloride | 81% |
methanol
2-methyl-2-sulphatopropionamide
2-hydroxyisobutyramide
A
2-methyllactic acid
B
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
With water; acetic acid at 115℃; under 1875.19 Torr; for 1h; Product distribution / selectivity; | A 19.2% B 81.5% |
1-methoxy-2-methyl-1-trimethylsiloxy-1-propene
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
Stage #1: 1-methoxy-2-methyl-1-trimethylsiloxy-1-propene With pyridine; methyltrioxorhenium(VII) In acetic acid; acetonitrile at 0 - 20℃; Oxidation; Stage #2: With potassium fluoride In methanol for 1h; Substitution; Further stages.; | 71% |
With 3-chloro-benzenecarboperoxoic acid 1.) hexane, RT, 30 min, 2.) Et3NF, 30 min; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
With oxygen In N,N-dimethyl-formamide at 20℃; electrolysis; | 40% |
With tert.-butylhydroperoxide at 150℃; | |
Multi-step reaction with 2 steps 1: 83 percent / 1.) LDA / 1.) THF, -78 deg C, 10 min, 2.) -> RT, 3 h 2: MCPBA / 1.) hexane, RT, 30 min, 2.) Et3NF, 30 min View Scheme |
methanol
2-hydroxy-2-methylpropanenitrile
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
With sulfuric acid; hydroquinone Zugeben von trocknem Na2SO4 und Destillieren bis auf 225-240grad; | |
With sulfuric acid; hydroquinone Zugeben von trocknem Na2SO4 und Destillieren bis auf 225-240grad; |
acetone
A
methyl 2-hydroxy-2-methylpropionate
B
methacrylic acid methyl ester
Conditions | Yield |
---|---|
at 445 - 455℃; durch ein mit Quarzstuecken gefuelltes erhitztes Eisenrohr; | |
at 445 - 455℃; durch ein mit Quarzstuecken gefuelltes erhitztes Eisenrohr; |
methanol
Isopropenyl acetate
carbon monoxide
A
2-methoxy-2,5,5-trimethyl-1,3-dioxolan-4-one
B
methyl 2-hydroxy-2-methylpropionate
C
methyl 3-acetoxybutyrate
D
methyl 2-acetoxy-2-methylpropionate
Conditions | Yield |
---|---|
With 2,6-dimethylpyridine; PdCl2(PPh)3 In benzene at 100℃; under 152000 Torr; for 5.5h; Product distribution; Mechanism; other reagents, var. educts ratio, temp., pressure and time; | |
With bis-triphenylphosphine-palladium(II) chloride In benzene at 100℃; under 114000 Torr; for 5h; Product distribution; Mechanism; other acetates, var. Pd and pyridine derivs. as reagents, concns. of reagents, temp. ans reaction time; | A 13 % Chromat. B 5.7 % Chromat. C 1.3 % Chromat. D 1.2 % Chromat. |
methanol
2-hydroxyisobutyramide
A
methyl 2-hydroxy-2-methylpropionate
B
α-methoxyisobutyramide
Conditions | Yield |
---|---|
With lead(IV) tetraacetate at 200℃; under 22501.8 - 30002.4 Torr; Product distribution; Rate constant; molar ratio of lead acetate; time;; |
methanol
2-hydroxy-2-methylpropanenitrile
A
methyl 2-hydroxy-2-methylpropionate
B
2-Hydroxy-2-methyl-thiopropionic acid O-methyl ester
Conditions | Yield |
---|---|
With hydrogenchloride; hydrogen sulfide 1.) ether, RT, 16 h, 2.) ether, RT, 2 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts; |
methanol
2-hydroxy-2-methylpropanenitrile
A
methyl 2-hydroxy-2-methylpropionate
B
2-Hydroxy-2-methyl-propionimidic acid methyl ester
Conditions | Yield |
---|---|
With hydrogenchloride In diethyl ether for 16h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
methyl 2-methyl-2-((methanesulfonyl)oxy)propanoate
A
methyl 2-hydroxy-2-methylpropionate
B
methacrylic acid methyl ester
Conditions | Yield |
---|---|
With 1,1,1,3',3',3'-hexafluoro-propanol; lutidine In water Yield given. Yields of byproduct given; | |
With 2,6-dimethylpyridine; 1,1,1,3',3',3'-hexafluoro-propanol In water at 90℃; Rate constant; Kinetics; Thermodynamic data; ΔH++, ΔS++; |
hydrogenchloride
methyl 2-aminoisobutyrate hydrochloride
A
methyl 2-hydroxy-2-methylpropionate
B
2-methoxy-2-methylpropanoic acid
C
methacrylic acid methyl ester
Conditions | Yield |
---|---|
at 0℃; nachfolgendem Aufbewahren; |
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
In dimethylsulfoxide-d6 at 80℃; |
2-hydroxyisobutyramide
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
titanium(IV) isopropylate; methanol | |
titanium(IV) isopropylate; methanol |
2-hydroxyisobutyramide
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
In methanol |
A
1,3-dihydro-2H-benzimidazol-2-one
C
methyl 2-hydroxy-2-methylpropionate
E
acetone
Conditions | Yield |
---|---|
With methanol In methanol Irradiation (UV/VIS); irradiation of Co-complex (450-W medium-pressure Hg lamp, 366 nm); analyzing of Co(2+) by adding of KSCN (UV), other products are detected by HPLC or GC-Ms; |
methanol
Methyl formate
2-hydroxyisobutyramide
methyl 2-hydroxy-2-methylpropionate
Conditions | Yield |
---|---|
sodium amide; 3-butyl-1-methyl-1H-imidazol-3-ium hexafluorophosphate at 120℃; Product distribution / selectivity; |
methanol
2-methyllactic acid
A
methyl 2-hydroxy-2-methylpropionate
B
2-amino-2-cyanopropane
Conditions | Yield |
---|---|
With zirconium dioxide yttrium-doped at 220℃; under 300.03 Torr; Catalytic behavior; Temperature; Reagent/catalyst; Gas phase; Autoclave; |
methanol
2-methyllactic acid
A
methyl 2-hydroxy-2-methylpropionate
B
acetone
C
2-amino-2-cyanopropane
Conditions | Yield |
---|---|
With zirconium dioxide yttrium-doped at 220℃; under 300.03 Torr; Gas phase; Autoclave; |
A
2-methyllactic acid
B
methyl 2-hydroxy-2-methylpropionate
C
4-amino-3-isopropylbenzoic acid
Conditions | Yield |
---|---|
With ozone In methanol |
methyl 2-hydroxy-2-methylpropionate
allyl bromide
methyl 2-(allyloxy)-2-methylpropanoate
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil Cooling with ice; Stage #2: allyl bromide In N,N-dimethyl-formamide; mineral oil at 20℃; Cooling with ice; | 100% |
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 0.5h; Stage #2: allyl bromide In N,N-dimethyl-formamide; mineral oil at 20℃; for 18h; | 85.88% |
With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; for 16h; | 30% |
methyl 2-hydroxy-2-methylpropionate
t-butyldimethylsiyl triflate
2-methyl-2-[((dimethyl)-(1,1-dimethylethyl)silyl)oxy]-propanoate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 0 - 20℃; | 97% |
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 97% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 97% |
methyl 2-hydroxy-2-methylpropionate
N-hydroxy-3-(hydroxyiminomethyl)benzamidine
3-[5-(1-hydroxy-1-methylethyl)-[1,2,4]oxadiazol-3-yl]benzaldehyde oxime
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate; N-hydroxy-3-(hydroxyiminomethyl)benzamidine In 1-methyl-pyrrolidin-2-one at 22 - 27℃; Inert atmosphere; Stage #2: With sodium methylate In 1-methyl-pyrrolidin-2-one; methanol at 25 - 30℃; | 95.6% |
methyl 2-hydroxy-2-methylpropionate
chloro-diphenylphosphine
methyl 2-[(diphenylphosphino)oxy]-2-methylpropionate
Conditions | Yield |
---|---|
With dmap; triethylamine In tetrahydrofuran at 20℃; for 2h; | 95% |
With dmap; triethylamine In tetrahydrofuran at 20℃; for 2h; | |
With triethylamine In dichloromethane at 20℃; for 2h; Inert atmosphere; |
methyl 2-hydroxy-2-methylpropionate
2-Mercaptobenzothiazole
methyl 2-[(1,3-benzothiazol-2-yl)sulfanyl]-2-methylpropionate
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 94% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 94% |
methyl 2-hydroxy-2-methylpropionate
p-methoxybenzyl chloride
methyl 2-((4-methoxybenzyl)oxy)-2-methylpropanoate
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 25℃; for 0.166667h; Schlenk technique; Inert atmosphere; Stage #2: p-methoxybenzyl chloride In N,N-dimethyl-formamide; mineral oil at 25℃; for 12h; Schlenk technique; Inert atmosphere; | 93% |
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride; tetra-(n-butyl)ammonium iodide In N,N-dimethyl-formamide for 0.0833333h; Stage #2: p-methoxybenzyl chloride In N,N-dimethyl-formamide at 20 - 40℃; for 22h; | 35% |
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide Cooling with ice; Stage #2: p-methoxybenzyl chloride In N,N-dimethyl-formamide at 20℃; for 2h; |
methyl 2-hydroxy-2-methylpropionate
methyl iodide
methyl 2-methoxy-2-methylpropanoate
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 0.5h; Stage #2: methyl iodide In N,N-dimethyl-formamide; mineral oil at 20℃; | 93% |
With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; | 93% |
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 0.5h; Stage #2: methyl iodide In N,N-dimethyl-formamide; mineral oil at 20℃; | 93% |
Stage #1: methyl 2-hydroxy-2-methylpropionate With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 0.5h; Stage #2: methyl iodide In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; | 93% |
triethylsilyl chloride
methyl 2-hydroxy-2-methylpropionate
methyl 2-methyl-2-(triethylsiloxy)propanoate
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 20℃; for 24h; Inert atmosphere; | 92% |
With pyridine at 60℃; | 91% |
With dmap; triethylamine In dichloromethane at 25℃; for 24h; | |
With dmap; triethylamine In dichloromethane at 20℃; for 24h; Inert atmosphere; |
methyl 2-hydroxy-2-methylpropionate
methanesulfonyl chloride
methyl 2-methyl-2-((methanesulfonyl)oxy)propanoate
Conditions | Yield |
---|---|
With triethylamine In dichloromethane -50 - -40 deg C -> 0 deg C; | 92% |
With triethylamine In (2S)-N-methyl-1-phenylpropan-2-amine hydrate; tert-butyl methyl ether | |
With triethylamine In tert-butyl methyl ether at -5 - 20℃; for 5h; Inert atmosphere; |
chloro-trimethyl-silane
methyl 2-hydroxy-2-methylpropionate
methyl 2-(trimethylsilyloxy)-2-methyl-propionate
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 20℃; for 24h; Inert atmosphere; | 92% |
methyl 2-hydroxy-2-methylpropionate
2-mercapto-6-nitrobenzothiazole
methyl 2-methyl-2-[(6-nitro-1,3-benzothiazol-2-yl)sulfanyl]-propionate
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 91% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 91% |
diethyl phosphorylchloridite
methyl 2-hydroxy-2-methylpropionate
methyl 2-<(diethoxyphosphino)oxy>-2-methylpropanoate
Conditions | Yield |
---|---|
With pyridine In tetrahydrofuran at 0 - 20℃; for 1h; | 90% |
methyl 2-hydroxy-2-methylpropionate
tert-butyldimethylsilyl chloride
2-methyl-2-[((dimethyl)-(1,1-dimethylethyl)silyl)oxy]-propanoate
Conditions | Yield |
---|---|
With 1H-imidazole; dmap In N,N-dimethyl-formamide at 100℃; for 16h; Etherification; | 90% |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 72h; | 90% |
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 48h; Inert atmosphere; | 70% |
With 1H-imidazole In dichloromethane at 0 - 20℃; Inert atmosphere; |
methyl 2-hydroxy-2-methylpropionate
N,O-dimethylhydroxylamine*hydrochloride
2-hydroxy-N-methoxy-N,2-dimethylpropanamide
Conditions | Yield |
---|---|
With isopropylmagnesium chloride In tetrahydrofuran at -20 - 20℃; for 1.5h; | 90% |
With isopropylmagnesium chloride In tetrahydrofuran at -20 - 0℃; for 1.5h; Inert atmosphere; | 80% |
methyl 2-hydroxy-2-methylpropionate
carbonochloridic acid, chloromethyl ester
Conditions | Yield |
---|---|
With pyridine In dichloromethane at 0 - 20℃; for 1.5h; | 90% |
With pyridine In dichloromethane at 0 - 20℃; for 1.5h; Inert atmosphere; | 90% |
With pyridine; hydrogenchloride In dichloromethane at 0 - 20℃; for 1.5h; Inert atmosphere; | 90% |
With pyridine In dichloromethane at 0 - 20℃; for 2h; |
Conditions | Yield |
---|---|
With iron(III) chloride In hexane at 0 - 20℃; | 89% |
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 89% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 89% |
methyl 2-hydroxy-2-methylpropionate
1-bromomethyl-4-iodobenzene
2-[(4-iodobenzyl)oxy]-2-methylpropionic acid methyl ester
Conditions | Yield |
---|---|
With ammonium chloride In tetrahydrofuran; ethyl acetate; paraffin | 86% |
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 85% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 85% |
3,4-dihydro-2H-pyran
methyl 2-hydroxy-2-methylpropionate
methyl 2-methyl-2-(tetrahydropyranyloxy)propanoate
Conditions | Yield |
---|---|
pyridin-2-yl tosylate In dichloromethane for 1.5h; | 85% |
propanoic acid methyl ester
methyl 2-hydroxy-2-methylpropionate
4-hydroxy-3,5,5-trimethylfuran-2(5H)-one
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran at 20℃; Dieckmann cyclization; | 85% |
methyl 2-hydroxy-2-methylpropionate
thiophenol
methyl 2-methyl-2-(phenylsulfanyl)propionate
Conditions | Yield |
---|---|
With 2,6-Di-tert-butyl-1,4-benzoquinone; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 83% |
With 2,6-Di-tert-butyl-1,4-benzoquinone; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 83% |
methyl 2-hydroxy-2-methylpropionate
1-methyl-5-mercaptotetrazole
methyl 2-methyl-2-[(1-methyl-1H-tetrazol-5-yl)sulfanyl]-propionate
Conditions | Yield |
---|---|
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; Inert atmosphere; | 83% |
With ethyl-2-azidoacetate; phenyl diphenylphosphinite In toluene at 40℃; for 24h; | 83% |
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 20℃; for 1h; | 82.6% |
Stage #1: methyl 2-hydroxy-2-methylpropionate With lithium aluminium tetrahydride In tetrahydrofuran at 20℃; Stage #2: With water; sodium hydroxide In tetrahydrofuran | 68% |
With potassium tert-butylate; hydrogen; [tris(μ-chloro)bis((triphos)ruthenium(II))] chloride In methanol at 100℃; under 30003 Torr; for 13h; Inert atmosphere; Autoclave; | 90.4 %Chromat. |
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 20℃; for 12.3333h; |
methyl 2-hydroxy-2-methylpropionate
(2,4-dichlorophenyl)methanesulfonyl chloride
methyl 2-{[(2,4-dichlorobenzyl)sulphonyl]oxy}-2-methylpropanoate
Conditions | Yield |
---|---|
Stage #1: methyl 2-hydroxy-2-methylpropionate With pyridine at 0℃; Stage #2: (2,4-dichlorophenyl)methanesulfonyl chloride at 5℃; for 120h; | 81.6% |
With pyridine at 5℃; for 120h; | 81.6% |
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