2,4-Dichlorobenzaldehyde → (S)-tert-Butyl 3-((2,4-dichlorobenzyl)amino)pyrrolidine-1-carboxylate

HRID 252084

반응식

HRID 252084 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([NH2:13])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:14][C:15]1[CH:22]=[C:21]([Cl:23])[CH:20]=[CH:19][C:16]=1[CH:17]=O.[BH4-].[Na+]>CO>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([NH:13][CH2:17][C:16]2[CH:19]=[CH:20][C:21]([Cl:23])=[CH:22][C:15]=2[Cl:14])[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

참가 물질

5

반응물 3

HCID 134042,4-DichlorobenzaldehydeHCID 854071tert-butyl (3S)-3-aminopyrrolidine-1-carboxylateHCID 4311764Sodium borohydride

생성물 1

HCID 66854615(S)-tert-Butyl 3-((2,4-dichlorobenzyl)amino)pyrrolidine-1-carboxylate

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

Stir a mixture of (S)-3-amino-pyrrolidine-1-carboxylic acid tert-butyl ester (15.07 g, 81.0 mmol) and 2,4-dichlorobenzaldehyde (13.46 g, 76.9 mmol) in dry methanol (250 mL) at room temperature under nitrogen overnight. Add slowly sodium borohydride (4.74 g, 125.4 mmol) and stir for 10 min. Concentrate and add 2 N NaOH (150 mL) and extract with diethyl ether. Combine the organic layers, wash with saturated aqueous sodium chloride, dry (magnesium sulfate) and concentrate to give (S)-3-(2,4-dichlorobenzylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester which may be used without further purification (26.9 g, 100%).

후처리

  1. stirringstir for 10 min
  2. concentrationConcentrate
  3. additionadd 2 N NaOH (150 mL)
  4. extractionextract with diethyl ether
  5. washwash with saturated aqueous sodium chloride
  6. dry with materialdry (magnesium sulfate)
  7. concentrationconcentrate

출처 및 근거

ORD 기록
ord-4d67d823c64943d4a40ecc1545da463a
출처 데이터셋
uspto-grants-2011_01
특허 번호
US07868014B2

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