Dimethyl Sulfoxide → tert-Butyl (2S,4R)-4-((tert-butyldimethylsilyl)oxy)-2-formylpyrrolidine-1-carboxylate

HRID 225957

반응식

HRID 225957 반응식
CS(C)=O.C(Cl)(=O)C(Cl)=O.[Si:11]([O:18][C@H:19]1[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C@H:21]([CH2:31][OH:32])[CH2:20]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([CH3:13])[CH3:12].C(N(CC)CC)C>ClCCl.O>[Si:11]([O:18][C@H:19]1[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C@H:21]([CH:31]=[O:32])[CH2:20]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([CH3:13])[CH3:12]

참가 물질

7

반응물 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 11078078tert-butyl (2S,4R)-4-((tert-butyldimethylsilyl)oxy)-2-(hydroxymethyl)pyrrolidine-1-carboxylate

생성물 1

HCID 10969557tert-Butyl (2S,4R)-4-((tert-butyldimethylsilyl)oxy)-2-formylpyrrolidine-1-carboxylate수율 94%

시약·촉매·용매 2

HCID 962Water용매HCID 6344Dichloromethane용매

실험 절차

To a mixture of DMSO (53 g, 0.68 mol) and oxalylchloride (43 g, 0.34 mol) in dry dichloromethane (1.51) at −78° C. was added tert-butyl (2S,4R)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-(hydroxymethyl)pyrrolidine-1-carboxylate (75 g, 0.226 mol) drop-wise. After stiring at −78° C. for 1 h, was added triethylamine (158 ml, 1.13 mol) drop-wise and warmed the reaction mixture slowly to RT. The reaction mixture was diluted with water and separated the organic layer. The organic layer was washed with brine and dried. The solvent was removed under vacuum to give tert-butyl (2S,4R)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-formylpyrrolidine-1-carboxylate (70 g) as pale yellow liquid. Yield: 94%

후처리

  1. customseparated the organic layer
  2. washThe organic layer was washed with brine
  3. customdried
  4. customThe solvent was removed under vacuum

출처 및 근거

ORD 기록
ord-0f00aacac88e492488dea9e2719800a5
출처 데이터셋
uspto-grants-2009_07
특허 번호
US07557136B2

연결된 노트

불러오는 중…