Hydrochloric Acid → 2-(4-Nitrobenzyloxycarbonyl)amino-1,3-propanediol

HRID 1649816

반응식

HRID 1649816 반응식
[OH:1][CH2:2][C@H:3]([NH:8][C:9]([O:11][CH2:12][C:13]1[CH:18]=[CH:17][C:16]([N+:19]([O-:21])=[O:20])=[CH:15][CH:14]=1)=[O:10])[C:4](OC)=[O:5].[BH4-].[Na+].Cl.O>O1CCCC1.C(O)C.C(OCC)(=O)C>[N+:19]([C:16]1[CH:17]=[CH:18][C:13]([CH2:12][O:11][C:9]([NH:8][CH:3]([CH2:4][OH:5])[CH2:2][OH:1])=[O:10])=[CH:14][CH:15]=1)([O-:21])=[O:20]

참가 물질

8

반응물 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 4311764Sodium borohydrideHCID 57056522methyl (2S)-3-hydroxy-2-[(4-nitrobenzyloxycarbonyl)amino]propionate

생성물 1

HCID 199345222-(4-Nitrobenzyloxycarbonyl)amino-1,3-propanediol수율 68.7%

시약·촉매·용매 3

HCID 702Ethanol용매HCID 8028Tetrahydrofuran용매HCID 8857Ethyl Acetate용매

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온도
0 °C

실험 절차

To a solution of methyl (2S)-3-hydroxy-2-[(4-nitrobenzyloxycarbonyl)amino]propionate (2.12 g) in tetrahydrofuran (20 ml) and ethanol (20 ml) was added sodium borohydride(0.54 g) at 0° C. under nitrogen atmosphere. After stirring at 0° C. for 5 hours, to the mixture was added a mixture of concentrated hydrochloric acid (1.7 ml), water (40 ml) and ethyl acetate (40 ml). The organic layer was separated, washed with 10% aqueous sodium hydrogen carbonate and brine successively, dried over magnesium sulfate, and evaporated. The residue was chromatographed on silica gel (160 ml) eluting with a mixture of acetone and dichloromethane (1:9, V/V) to give 2-[(4-nitrobenzyloxycarbonyl)amino]-1,3-propanediol (1.32 g).

후처리

  1. additionwas added
  2. customThe organic layer was separated
  3. washwashed with 10% aqueous sodium hydrogen carbonate and brine successively
  4. dry with materialdried over magnesium sulfate
  5. customevaporated
  6. customThe residue was chromatographed on silica gel (160 ml)
  7. washeluting with a mixture of acetone and dichloromethane (1:9, V/V)

출처 및 근거

ORD 기록
ord-2cde9618fc3c40cb8d3e3c97ca84552d
출처 데이터셋
uspto-grants-1990_05
특허 번호
US04921852

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