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Volumn 41, Issue 18, 2000, Pages 3437-3441

Highly enantioselective synthesis of 1,3-mercaptoalcohols from α,β- unsaturated ketones: Asymmetric bifunctional group exchange reaction

Author keywords

[No Author keywords available]

Indexed keywords

1,3 MERCAPTO ALCOHOL DERIVATIVE; ALCOHOL DERIVATIVE; CHALCONE DERIVATIVE; KETONE DERIVATIVE; REAGENT; UNCLASSIFIED DRUG;

EID: 0034728896     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)00395-6     Document Type: Article
Times cited : (26)

References (44)
  • 1
    • 0000426886 scopus 로고
    • For reviews, see: (a)
    • For reviews, see: (a) Wilds, A. L. Org. React. 1944, 2, 178-223.
    • (1944) Org. React. , vol.2 , pp. 178-223
    • Wilds, A.L.1
  • 25
    • 0034620685 scopus 로고    scopus 로고
    • J. Am. Chem. Soc. 2000, 122, 1927-1936.
    • (2000) J. Am. Chem. Soc. , vol.122 , pp. 1927-1936
  • 29
    • 0343133387 scopus 로고    scopus 로고
    • 2 in 17% yield, along with the other diastereomers.
    • 2 in 17% yield, along with the other diastereomers.
  • 30
    • 0342263906 scopus 로고    scopus 로고
    • The absolute configurations of the thiolic carbon in 3c-f were determined by NOE experiments, because a 1,3-mercapto alcohol formed a chair conformation of a six-membered ring by intramolecular hydrogen bonding between the oxygen atom and the hydrogen atom of the thiol.
    • The absolute configurations of the thiolic carbon in 3c-f were determined by NOE experiments, because a 1,3-mercapto alcohol formed a chair conformation of a six-membered ring by intramolecular hydrogen bonding between the oxygen atom and the hydrogen atom of the thiol.
  • 31
    • 0343133386 scopus 로고    scopus 로고
    • 2 (37 mg, 0.18 mmol) was added dropwise dimethylaluminum chloride (1.0 M hexane solution, 0.21 ml, 0.22 mmol). After the mixture was stirred for 15 min at room temperature, a benzene solution (2 ml) of the α,β-unsaturated ketone 1c (75 mg, 0.36 mmol) was added, and the resulting mixture was stirred for 48 h at the same temperature. The reaction mixture was quenched with a 1N-HCl solution, and the aqueous layer extracted with chloroform. After the usual work-up, the product 2c (36 mg, 60%) was isolated by silica gel chromatography. A mixture of 2c (28 mg, 0.07 mmol), DBU (0.047 ml, 0.34 mmol), and benzyl mercaptan (15 μl, 0.13 mmol) in toluene (8 ml) was refluxed for 18 h. The usual work-up and purification by silica gel chromatography gave the 1,3-mercapto alcohol 3c (16 mg, 97% yield), along with 5 (18 mg, 91% yield).
    • 2 (37 mg, 0.18 mmol) was added dropwise dimethylaluminum chloride (1.0 M hexane solution, 0.21 ml, 0.22 mmol). After the mixture was stirred for 15 min at room temperature, a benzene solution (2 ml) of the α,β-unsaturated ketone 1c (75 mg, 0.36 mmol) was added, and the resulting mixture was stirred for 48 h at the same temperature. The reaction mixture was quenched with a 1N-HCl solution, and the aqueous layer extracted with chloroform. After the usual work-up, the product 2c (36 mg, 60%) was isolated by silica gel chromatography. A mixture of 2c (28 mg, 0.07 mmol), DBU (0.047 ml, 0.34 mmol), and benzyl mercaptan (15 μl, 0.13 mmol) in toluene (8 ml) was refluxed for 18 h. The usual work-up and purification by silica gel chromatography gave the 1,3-mercapto alcohol 3c (16 mg, 97% yield), along with 5 (18 mg, 91% yield).
  • 34
    • 0001019593 scopus 로고
    • The absolute configuration of the alcoholic carbon in 3 was determined by comparison of the sign of the specific rotation with that in the literature and Ref. 5
    • The absolute configuration of the alcoholic carbon in 3 was determined by comparison of the sign of the specific rotation with that in the literature (Holt, D. A. et al. J. Am. Chem. Soc. 1993, 115, 9925-9938, and Ref. 5).
    • (1993) J. Am. Chem. Soc. , vol.115 , pp. 9925-9938
    • Holt, D.A.1
  • 37
    • 33751156510 scopus 로고
    • (c) Catalytic asymmetric Michael addition of a thiol
    • (c) Tomioka, K.; Muraoka, A.; Kanai, M. J. Org. Chem. 1995, 60, 6188-6190. Catalytic asymmetric Michael addition of a thiol:
    • (1995) J. Org. Chem. , vol.60 , pp. 6188-6190
    • Tomioka, K.1    Muraoka, A.2    Kanai, M.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.