Acetic Acid → N-Benzyloxycarbonyl-2-amino-2-[4-propoxybenzyl]-ethanol

HRID 1459109

반응식

HRID 1459109 반응식
C[O:2][C:3](=O)[C@H:4]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([O:23][CH2:24][CH2:25][CH3:26])=[CH:19][CH:18]=1)[NH:5][C:6]([O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:7].[BH4-].[Na+].CO.C(O)(=O)C>COC(C)(C)C.O1CCCC1.O>[CH2:9]([O:8][C:6]([NH:5][CH:4]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([O:23][CH2:24][CH2:25][CH3:26])=[CH:19][CH:18]=1)[CH2:3][OH:2])=[O:7])[C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1

참가 물질

8

반응물 4

HCID 176Acetic AcidHCID 887MethanolHCID 4311764Sodium borohydrideHCID 22940772N-benzyloxycarbonyl-3-[4-propoxyphenyl]-alanine-methyl ester

생성물 1

HCID 67688130N-Benzyloxycarbonyl-2-amino-2-[4-propoxybenzyl]-ethanol

시약·촉매·용매 3

HCID 962Water용매HCID 8028Tetrahydrofuran용매HCID 15413tert-Butyl methyl ether용매

실험 절차

4.15 g (11.2 mmol) of N-benzyloxycarbonyl-3-[4-propoxyphenyl]-alanine-methyl ester is dissolved in 20 ml of tert-butyl methyl ether and mixed with 0.17 g (4.5 mmol) of sodium borohydride. At 0° C., 6 ml of methanol is added and it is stirred for three hours under argon at a temperature below 5° C. Then, 0.8 ml of acetic acid, dissolved in 3 ml of tetrahydrofuran, is added, mixed with 3 ml of water and stirred for ten minutes at room temperature. The organic phase is separated, washed with water and dried on sodium sulfate. The drying agent is suctioned off, the filtrate is concentrated by evaporation and the residue is chromatographed for purification on silica gel (eluent: ethyl acetate/hexane).

후처리

  1. additionis added
  2. stirringstirred for ten minutes at room temperature
  3. customThe organic phase is separated
  4. washwashed with water
  5. customdried on sodium sulfate
  6. concentrationthe filtrate is concentrated by evaporation
  7. customthe residue is chromatographed for purification on silica gel (eluent: ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-ca274c22274d40b7a345efc0e30b3f31
출처 데이터셋
uspto-grants-1998_12
특허 번호
US05853699

연결된 노트

불러오는 중…