4-Hydroxybenzaldehyde → 4-(2-Benzyloxycarbonyl-2-methylpropoxy)benzaldehyde

HRID 2223598노트

반응식

HRID 2223598 반응식
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1.O[CH2:11][C:12]([CH3:24])([CH3:23])[C:13]([O:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:14].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1.O>[CH2:16]([O:15][C:13]([C:12]([CH3:24])([CH3:23])[CH2:11][O:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1)=[O:14])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1

참가 물질

7

반응물 4

HCID 1264-HydroxybenzaldehydeHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 18922595Benzyl 3-hydroxy-2,2-dimethylpropanoate

생성물 1

HCID 230778534-(2-Benzyloxycarbonyl-2-methylpropoxy)benzaldehyde수율 14%

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 4-hydroxybenzaldehyde (2.7 g), benzyl hydroxypivalate (4.7 g) and triphenylphosphine (6.4 g) in tetrahydrofuran (22 mL) was added diethyl azodicarboxylate (40% toluene solution, 11 mL), and the mixture was stirred at room temperature for 2 days. The reaction mixture was poured into water, and the resulting mixture was extracted with diethyl ether. The organic layer was washed with water and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=6/1-4/1) to give the title compound (0.97 g).

후처리

  1. extractionthe resulting mixture was extracted with diethyl ether
  2. washThe organic layer was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was removed under reduced pressure
  5. customthe residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=6/1-4/1)

출처 및 근거

ORD 기록
ord-32f8af0f1b644c139b252f45eb078273
출처 데이터셋
uspto-grants-2008_05
특허 번호
US07375087B2

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