Conditions | Yield |
---|---|
With thionyl chloride at 20℃; | 100% |
With thionyl chloride at 20℃; | 100% |
With hydrogenchloride In chloroform; water for 60h; Catalytic behavior; Reflux; enantioselective reaction; | 99.6% |
diethyl (2S,3S)-tartrate
Conditions | Yield |
---|---|
With indium; water; ammonium chloride In methanol for 1h; Heating; | 89% |
diethyl (2S,3S)-tartrate
Conditions | Yield |
---|---|
With indium; water; ammonium chloride In methanol for 2h; Heating; | 85% |
diethyl (4R,5R)-1,3,2-dioxathiolane-4,5-dicarboxylate 2-oxide
diethyl (2S,3S)-tartrate
Conditions | Yield |
---|---|
With sodium azide In ethanol; water at 20℃; for 14h; |
diethyl (4R,5R)-1,3,2-dioxathiolane-4,5-dicarboxylate 2-oxide
A
diethyl (2S,3S)-tartrate
B
diethyl (2S,3R)-2-azido-3-hydroxysuccinate
Conditions | Yield |
---|---|
With sodium azide In water; N,N-dimethyl-formamide at 20℃; for 14h; |
(+/-)-diethyl tartrate
A
diethyl (2S,3S)-tartrate
B
diethyl (2R,3R)-tartrate
Conditions | Yield |
---|---|
With (S)-aminopropyl alcohol(at)silica 1 In hexane; isopropyl alcohol at 20℃; for 1h; Purification / work up; Resolution of racemate; Inert atmosphere; | A n/a B n/a |
diethyl (2S,3S)-tartrate
diethyl (4S,5S)-1,3,2-dioxathiolane-4,5-dicarboxylate 2-oxide
Conditions | Yield |
---|---|
With thionyl chloride In tetrachloromethane Heating; | 100% |
With thionyl chloride; triethylamine In dichloromethane for 3h; | 100% |
With thionyl chloride; N,N-dimethyl-formamide In dichloromethane at 0 - 50℃; for 2.5h; | 95% |
Dimethoxymethane
diethyl (2S,3S)-tartrate
diethyl (2S,3S)-2,3-di-O-methoxymethyl-tartrate
Conditions | Yield |
---|---|
With phosphorus pentoxide In dichloromethane | 100% |
With phosphorus pentoxide In dichloromethane for 3h; | 100% |
With phosphorus pentoxide In chloroform for 2h; Alkylation; | 84% |
With phosphorus pentoxide In dichloromethane | |
With phosphorus pentoxide In dichloromethane at 0℃; for 10h; Inert atmosphere; |
diethyl (2S,3S)-tartrate
dibromotriphenylphosphorane
Conditions | Yield |
---|---|
With triethylamine In toluene Cyclization; | 100% |
diethyl (2S,3S)-tartrate
dimethyl sulfate
(-)-(2S,3S)-O,O-Dimethylweinsaeure-diethylester
Conditions | Yield |
---|---|
With sodium hydride In diethyl ether at 0 - 20℃; Inert atmosphere; | 100% |
With sodium hydride In mineral oil at 0 - 20℃; for 12h; | 82% |
Conditions | Yield |
---|---|
Stage #1: titanium(IV) isopropylate; omeprazole sodium; diethyl (2S,3S)-tartrate With triethylamine In propan-1-ol at 40℃; for 0.166667h; Stage #2: (S)-Mandelic acid In propan-1-ol at 40℃; for 3h; Product distribution / selectivity; | 99.8% |
diethyl (2S,3S)-tartrate
diethyl (2S,3R)-(+)-erythro-2-hydroxy-3-bromosuccinate
Conditions | Yield |
---|---|
With hydrogen bromide; acetic acid at 0 - 25℃; for 13h; Inert atmosphere; | 99.1% |
With hydrogen bromide; acetic acid at 0 - 20℃; for 12h; | 99.1% |
With hydrogen bromide; acetic acid In benzene Heating; | 90% |
Stage #1: diethyl (2S,3S)-tartrate With hydrogen bromide; acetic acid at 20℃; for 16h; Stage #2: With ethanol; acetyl chloride for 5h; Heating; | |
Multi-step reaction with 2 steps 1: hydrogen bromide / 6.25 h / 0 - 20 °C 2: hydrogen bromide / acetic acid; ethanol / 10 h / Reflux View Scheme |
diethyl (2S,3S)-tartrate
p-Anisaldehyde dimethyl acetal
(2S,3S)-2,3-O-(4-methoxybenzylidene)-diethyl tartrate
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In N,N-dimethyl-formamide at 50℃; under 10 Torr; for 5h; | 99% |
With toluene-4-sulfonic acid In N,N-dimethyl-formamide at 50℃; under 18 Torr; for 5h; | 99% |
With toluene-4-sulfonic acid In N,N-dimethyl-formamide | 96% |
diethyl (2S,3S)-tartrate
acetone
(4S,5S)-diethyl 2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate
Conditions | Yield |
---|---|
With orthoformic acid triethyl ester | 99% |
With iodine at 20℃; for 12h; | 77% |
In orthoformic acid triethyl ester at 20℃; Reflux; | 72.6 g |
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate at 0 - 20℃; solid phase reaction; | 99% |
methoxyethene
diethyl (2S,3S)-tartrate
Conditions | Yield |
---|---|
With trifluoroacetic acid In dichloromethane for 48h; 0 deg C then room temp.; | 98% |
diethyl (2S,3S)-tartrate
2,2-dimethoxy-propane
diethyl (4R,5R)-2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid; orthoformic acid triethyl ester at 45℃; for 9h; Temperature; Reagent/catalyst; Reflux; | 98% |
With camphor-10-sulfonic acid | 68.5% |
With toluene-4-sulfonic acid; triethylamine In chloroform for 17h; Reflux; | 48.8% |
With toluene-4-sulfonic acid In chloroform for 18h; Reflux; | 42.8% |
diethyl (2S,3S)-tartrate
benzyl bromide
(2S,3S)-diethyl 2,3-bis(phenylmethoxy)succinate
Conditions | Yield |
---|---|
With potassium iodide; silver(l) oxide In dichloromethane for 1h; Heating; | 97% |
With potassium iodide; silver(l) oxide In dichloromethane for 1h; Reflux; Inert atmosphere; | 97% |
With thallium (I) ethoxide In acetonitrile 1.) 55 deg C, 48 h, 2.) room temp., 12 h; | 88% |
diethyl (2S,3S)-tartrate
2,2-dimethoxy-propane
(4S,5S)-diethyl 2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate
Conditions | Yield |
---|---|
Acidic conditions; | 97% |
With toluene-4-sulfonic acid In dichloromethane at 40℃; for 17h; | 90% |
With toluene-4-sulfonic acid In benzene for 8h; Reflux; | 79.2% |
3,3-dimethoxypentane
diethyl (2S,3S)-tartrate
diethyl (4S,5S)-2,2-diethyl-1,3-dioxolane-4,5-dicarboxylate
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In toluene for 3h; Inert atmosphere; Reflux; | 96% |
diethyl (2S,3S)-tartrate
orthoformic acid triethyl ester
D-(S,S)-2-ethoxy-1,3-dioxolane-4,5-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
With camphor-10-sulfonic acid In toluene at 95℃; | 95% |
With acetic acid In toluene Heating; | 94% |
diethyl (2S,3S)-tartrate
benzaldehyde
diethyl(4S,5S)-2-phenyl-1,3-dioxolan-4,5-dicarboxylate
Conditions | Yield |
---|---|
Stage #1: benzaldehyde With camphor-10-sulfonic acid; toluene-4-sulfonic acid; orthoformic acid triethyl ester In toluene for 0.75h; Heating / reflux; Stage #2: diethyl (2S,3S)-tartrate In toluene Heating / reflux; | 94.1% |
With toluene-4-sulfonic acid; orthoformic acid triethyl ester | 84% |
With toluene-4-sulfonic acid In cyclohexane for 4h; Reflux; |
diethyl (2S,3S)-tartrate
benzylamine
N,N'-dibenzyl-(S,S)-tartaric acid diamide
Conditions | Yield |
---|---|
With potassium carbonate In methanol for 8h; Heating; | 94% |
diethyl (2S,3S)-tartrate
diethyl (2S,3R)-erythro-2-acetoxy-3-bromosuccinate
Conditions | Yield |
---|---|
With hydrogen bromide In acetic acid for 4h; Ambient temperature; | 93% |
diethyl (2S,3S)-tartrate
benzyl bromide
diethyl (2S,3S)-2-(benzyloxy)-3-hydroxybutanedioate
Conditions | Yield |
---|---|
With tetrabutylammomium bromide; di(n-butyl)tin oxide; N-ethyl-N,N-diisopropylamine In neat (no solvent) at 70℃; for 1h; regioselective reaction; | 93% |
With silver(l) oxide In dichloromethane at 20℃; for 2h; | 17.9 g |
diethyl (2S,3S)-tartrate
(E)-α-hexylcinnamaldehyde
orthoformic acid triethyl ester
(E)-(4R,5R)-2-(1-Hexyl-2-phenyl-1-ethenyl)-4,5-dicarboethoxy-1,3-dioxolane
Conditions | Yield |
---|---|
In toluene-4-sulfonic acid; toluene | 91% |
pyrrolidine
diethyl (2S,3S)-tartrate
1,1'-[(2R,3R)-2,3-dihydroxy-1,4-dioxo-1,4-butanediyl]bis-pyrrolidine
Conditions | Yield |
---|---|
In ethanol for 12h; Reflux; | 91% |
diethyl (2S,3S)-tartrate
trichloromethyl chloroformate
Conditions | Yield |
---|---|
With pyrographite In tetrahydrofuran at 50℃; for 120h; | 90% |
diethyl (2S,3S)-tartrate
diethyl (4R,5R)-1,3,2-dioxathiolane-4,5-dicarboxylate 2-oxide
Conditions | Yield |
---|---|
With pyridine; thionyl chloride In dichloromethane at 0℃; | 90% |
diethyl (2S,3S)-tartrate
acetone
diethyl (4R,5R)-2,2-dimethyl-1,3-dioxolane-4,5-dicarboxylate
Conditions | Yield |
---|---|
With hydrogenchloride; orthoformic acid triethyl ester In N,N-dimethyl-formamide for 72h; Ambient temperature; | 89.5% |
With toluene-4-sulfonic acid In toluene for 15h; Inert atmosphere; Reflux; | 18% |
diethyl (2S,3S)-tartrate
cyclopentanone
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In toluene for 36h; Heating; | 88% |
With 10-camphorsulfonic acid In toluene at 150℃; for 24h; |
diethyl (2S,3S)-tartrate
chloroacetyl chloride
(2S,3S)-2,3-Bis-(2-chloro-acetoxy)-succinic acid diethyl ester
Conditions | Yield |
---|---|
With pyridine In chloroform for 5h; Ambient temperature; | 87.3% |
diethyl (2S,3S)-tartrate
4-(Phenylsulfonyl)-2-butanon-dimethylacetal
(4S,5S)-2-(2-Benzenesulfonyl-ethyl)-2-methyl-[1,3]dioxolane-4,5-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene at 80 - 90℃; for 20h; | 87% |
diethyl (2S,3S)-tartrate
benzaldehyde
diethyl-2,3-O-benzylidene-D-tartrate
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In cyclohexane for 16h; Catalytic behavior; Reflux; enantioselective reaction; | 87% |
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