메뉴 건너뛰기




Volumn 41, Issue 27, 2000, Pages 5199-5202

Photochemical reactions of 2,6-bis(trimethylsilyl)-4H-pyran with α- ketoesters

Author keywords

[No Author keywords available]

Indexed keywords

ESTER; KETONE; PYRAN DERIVATIVE;

EID: 0034235419     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)00814-5     Document Type: Article
Times cited : (6)

References (23)
  • 1
    • 84944078012 scopus 로고    scopus 로고
    • Katritzky, A. R.; Rees, C. W.; Scriven, E. F. V., Ed.; Pergamon Press: New York
    • Hepworth, J. D.; Gabbutt, C. D.; Heron, B. M. In Comprehensive Heterocyclic Chemistry II; Katritzky, A. R.; Rees, C. W.; Scriven, E. F. V., Ed.; Pergamon Press: New York, 1996; Vol. 5, pp. 351-468.
    • (1996) Comprehensive Heterocyclic Chemistry II , vol.5 , pp. 351-468
    • Hepworth, J.D.1    Gabbutt, C.D.2    Heron, B.M.3
  • 5
    • 0013108184 scopus 로고
    • (a)
    • (a) Richard, A. Ann. Chim. 1910, 21, 360-406.
    • (1910) Ann. Chim. , vol.21 , pp. 360-406
    • Richard, A.1
  • 9
    • 85037956782 scopus 로고    scopus 로고
    • Typical experiment: a mixture of 4H-pyran 1 (200 mg, 0.88 mmol) and ethyl pyruvate (1.77 mmol, 2.0 equiv.) in benzene (30 ml) was irradiated at 350 nm (Rayonet, T=30°C) during 5 h. After evaporation in vacuo, the residue was purified by flash chromatography (petroleum ether:ethyl acetate 90:10) to give the α-hydroxy ester 2c (185 mg, 62%)
    • Typical experiment: a mixture of 4H-pyran 1 (200 mg, 0.88 mmol) and ethyl pyruvate (1.77 mmol, 2.0 equiv.) in benzene (30 ml) was irradiated at 350 nm (Rayonet, T=30°C) during 5 h. After evaporation in vacuo, the residue was purified by flash chromatography (petroleum ether:ethyl acetate 90:10) to give the α-hydroxy ester 2c (185 mg, 62%).
  • 10
    • 85037953098 scopus 로고    scopus 로고
    • 13C NMR)
    • 13C NMR).
  • 11
    • 85037961668 scopus 로고    scopus 로고
    • note
    • -1): 3494, 1732, 1651, 1603.
  • 12
    • 85037952986 scopus 로고    scopus 로고
    • -1): 1727, 1611. This oxidation by-product 3 was also observed when a solution of 4H-pyran 1 in AcOEt was stored at room temperature, under air atmosphere, during several days.
    • -1): 1727, 1611. This oxidation by-product 3 was also observed when a solution of 4H-pyran 1 in AcOEt was stored at room temperature, under air atmosphere, during several days.
  • 13
    • 85037954138 scopus 로고    scopus 로고
    • nJ) at 500 MHz spectrometer
    • nJ) at 500 MHz spectrometer.
  • 22
    • 0031955099 scopus 로고    scopus 로고
    • (c)
    • (c) Bach, T. Synthesis 1998, 683-703.
    • (1998) Synthesis , pp. 683-703
    • Bach, T.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.