Sodium Chloride → Tert-butyl (3R)-3-(methanesulfonyloxy)pyrrolidine-1-carboxylate

HRID 5087ノート

反応式

HRID 5087 の反応式
C(N(CC)CC)C.[CH3:8][S:9](Cl)(=[O:11])=[O:10].[C:13]([O:17][C:18]([N:20]1[CH2:24][CH2:23][C@@H:22]([OH:25])[CH2:21]1)=[O:19])([CH3:16])([CH3:15])[CH3:14].[Cl-].[Na+]>O1CCCC1>[C:13]([O:17][C:18]([N:20]1[CH2:24][CH2:23][C@@H:22]([O:25][S:9]([CH3:8])(=[O:11])=[O:10])[CH2:21]1)=[O:19])([CH3:16])([CH3:14])[CH3:15]

参加物

6

反応物 4

HCID 5234Sodium ChlorideHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 6544479tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate

生成物 1

HCID 10934372Tert-butyl (3R)-3-(methanesulfonyloxy)pyrrolidine-1-carboxylate

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

16.91 ml of triethylamine and 9.36 ml of methanesulfonyl chloride were added, in that order, whilst ice-cooling, to a solution of 25 g of (3R)-1-t-butoxycarbonyl-3-hydroxypyrrolidine dissolved in 250 ml of dry tetrahydrofuran, and the mixture was stirred at 0° to 5° C. for 30 minutes and then at 15° C. for 30 minutes. At the end of this time, the mixture was poured into an aqueous solution of sodium chloride and extracted with ethyl acetate. The extract was washed with an aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, to give 3.10 g of the title compound as a colorless oil.

後処理

  1. waitat 15° C. for 30 minutes
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with an aqueous solution of sodium chloride
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was then removed by distillation under reduced pressure

出典と根拠

ORDレコード
ord-e65f24035a9c4030ba5dd6e5e6051a44
出典データセット
uspto-grants-1993_09
特許番号
US05242914

反応ノート

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