Triethylamine → 2-Formyl-5-methoxy-6-methyl-3-[dimethyl-(1,1,2-trimethyl-propyl)silanyloxy]-benzoic acid allyl ester

HRID 234207

반응식

HRID 234207 반응식
[CH2:1]([O:4][C:5](=[O:18])[C:6]1[C:11]([CH3:12])=[C:10]([O:13][CH3:14])[CH:9]=[C:8]([OH:15])[C:7]=1[CH:16]=[O:17])[CH:2]=[CH2:3].[CH3:19][Si:20]([CH3:28])([C:22]([CH3:27])([CH3:26])[CH:23]([CH3:25])[CH3:24])Cl.C(N(CC)CC)C>CN(C)C=O>[CH2:1]([O:4][C:5](=[O:18])[C:6]1[C:11]([CH3:12])=[C:10]([O:13][CH3:14])[CH:9]=[C:8]([O:15][Si:20]([CH3:28])([CH3:19])[C:22]([CH3:27])([CH3:26])[CH:23]([CH3:25])[CH3:24])[C:7]=1[CH:16]=[O:17])[CH:2]=[CH2:3]

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 144239Dimethylthexylsilyl chlorideHCID 537352632-Formyl-3-hydroxy-5-methoxy-6-methylbenzoic acid allyl ester

생성물 1

HCID 537110522-Formyl-5-methoxy-6-methyl-3-[dimethyl-(1,1,2-trimethyl-propyl)silanyloxy]-benzoic acid allyl ester수율 92.4%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

To a solution of 75.1 g of 2-formyl-3-hydroxy-5-methoxy-6-methylbenzoic acid allyl ester in 0.6 l of N,N-dimethylformamide were added 81.0 g of dimethyl-(1,1,2-trimethyl-propyl)-chlorosilane and 45.5 g of triethylamine. The mixture was stirred for 4 h at room temperature and then evaporated in vacuo. The residue was taken up in 2 l of ethyl acetate, and the mixture was successively washed with 1N hydrochloric acid and with brine, and dried over sodium sulfate. The solvent was evaporated in vacuo and the residue was crystallized from hexane to give 108.8 g of 2-formyl-5-methoxy-6-methyl-3-[dimethyl-(1,1,2-trimethyl-propyl)silanyloxy]-benzoic acid allyl ester as white crystals of m.p. 81°-82° C.

후처리

  1. customevaporated in vacuo
  2. washthe mixture was successively washed with 1N hydrochloric acid and with brine
  3. dry with materialdried over sodium sulfate
  4. customThe solvent was evaporated in vacuo
  5. customthe residue was crystallized from hexane

출처 및 근거

ORD 기록
ord-bbb2725d2abe4f02a057cbb2e7ae8b3c
출처 데이터셋
uspto-grants-1997_01
특허 번호
US05594135

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