Carbon tetrabromide → 1-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(bromomethyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate

HRID 1411310노트

반응식

HRID 1411310 반응식
O[CH2:2][C:3]1[CH:4]=[C:5]2[C:11]3([CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12]3)[CH2:10][N:9]([C:23]([O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])=[O:24])[C:6]2=[CH:7][CH:8]=1.C(Br)(Br)(Br)[Br:33].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C(Cl)Cl>[Br:33][CH2:2][C:3]1[CH:4]=[C:5]2[C:11]3([CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12]3)[CH2:10][N:9]([C:23]([O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])=[O:24])[C:6]2=[CH:7][CH:8]=1

참가 물질

5

반응물 3

HCID 11205Carbon tetrabromideHCID 11776TriphenylphosphineHCID 904495331-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(hydroxymethyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate

생성물 1

HCID 904495541-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(bromomethyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate수율 77.8%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

1-(2-(Trimethylsilyl)ethyl) 1′-tert-butyl 5-(hydroxymethyl)spiro[indoline-3,3′-pyrrolidine]-1,1′-dicarboxylate (441 mg, 0.98 mmol) was dissolved in methylene chloride (10 mL). Thereafter, carbon tetrabromide (359 mg, 1.08 mmol) and triphenylphosphine (310 mg, 1.18 mmol) were added to the above obtained solution under cooling on ice, and the thus obtained mixture was then stirred at the same temperature as above for 2.5 hours. Thereafter, the reaction solution was concentrated in vacuo, and the obtained residue was then purified by silica gel column chromatography (hexane:ethyl acetate=10:1) to obtain 1-(2-(trimethylsilyl)ethyl) 1′-tert-butyl 5-(bromomethyl)spiro[indoline-3,3′-pyrrolidine]-1,1′-dicarboxylate (390 mg, 77%) in the form of a colorless amorphous product.

후처리

  1. temperatureunder cooling on ice
  2. concentrationThereafter, the reaction solution was concentrated in vacuo
  3. customthe obtained residue was then purified by silica gel column chromatography (hexane:ethyl acetate=10:1)

출처 및 근거

ORD 기록
ord-ed837e15572a40ab8d665eb9e5b76ee4
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08921576B2

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