7-(acetyloxy)-alpha-chloro-3a,4,5,6,7,7a-hexahydro-gamma,3a-dimethyl-1H-indene-3-butanoic acid methyl ester → 7-(acetyloxy)-beta-chloro-3a,4,5,6,7,7a-hexahydro-delta,3a-dimethyl-1H-indene-3-butanol

HRID 6282노트

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HRID 6282 반응식
C[O:2][C:3](=O)[CH:4]([Cl:22])[CH2:5][CH:6]([CH3:21])[C:7]1[C:15]2([CH3:16])[CH:10]([CH:11]([O:17][C:18](=[O:20])[CH3:19])[CH2:12][CH2:13][CH2:14]2)[CH2:9][CH:8]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-]>O1CCCC1>[C:18]([O:17][CH:11]1[CH:10]2[C:15]([CH3:16])([C:7]([CH:6]([CH3:21])[CH2:5][CH:4]([Cl:22])[CH2:3][OH:2])=[CH:8][CH2:9]2)[CH2:14][CH2:13][CH2:12]1)(=[O:20])[CH3:19]

참가 물질

4

반응물 2

HCID 148012757-(acetyloxy)-alpha-chloro-3a,4,5,6,7,7a-hexahydro-gamma,3a-dimethyl-1H-indene-3-butanoic acid methyl esterHCID 21226445Aluminium lithium hydride2회

생성물 1

HCID 148012777-(acetyloxy)-beta-chloro-3a,4,5,6,7,7a-hexahydro-delta,3a-dimethyl-1H-indene-3-butanol수율 93%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

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온도
0 °C

실험 절차

A solution of 1.01 g (2.95 mmol) of [3aS-[3(αS*, γR*),3aα,7β,7aβ]-7-(acetyloxy)-α-chloro-3a,4,5,6,7, 7a-hexahydro-γ,3a-dimethyl-1H-indene-3-butanoic acid methyl ester in 25 mL of anhydrous tetrahydrofuran was cooled at 0° C. and treated under argon with 1.47 mL (1.47 mmol) of a 1M solution of lithium aluminum hydride in tetrahydrofuran. After stirring for 2 hours at 0° C., additional 0.20 mL of lithium aluminum hydride solution was added and the reaction allowed to proceed for 1 additional hour. It was then quenched by careful addition of 8 mL of a 2N aqueous Rochelle salt solution, then 0.5 mL of 2N hydrochloric acid. After dilution with water, it was extracted with ethyl acetate. The combined extracts were washed with 2N aqueous Rochelle salt solution, then brine, dried and evaporated to dryness to give 0.90 g (93% yield) of the title compound as a colorless, thick oil: [α]23D -30.1° (c 0.6, EtOH); 1H NMR (200 MHz, CDCl3) δ0.93 (s, 3H), 1.07 (d, J=7.2 Hz, 3H), 2.04 (s, 3H), 2.52 (br m, 1H), 3.73 (m, 2H), 4.00 (m, 1H), 4.97 (td, J=12.0, 4.4 Hz, 1H), 5.27 (br s, 1H) ppm.

후처리

  1. customIt was then quenched by careful addition of 8 mL of a 2N aqueous Rochelle salt solution
  2. extractionAfter dilution with water, it was extracted with ethyl acetate
  3. washThe combined extracts were washed with 2N aqueous Rochelle salt solution
  4. dry with materialbrine, dried
  5. customevaporated to dryness

출처 및 근거

ORD 기록
ord-3b52f1fff38f4058ba6f446cfd607f7d
출처 데이터셋
uspto-grants-1993_09
특허 번호
US05247123

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