BROWNBRIDGE, P.;EGERT, E.;HUNT, P. G.;KENNARD, O.;WARREN, S., J. CHEM. SOC. PERKIN TRANS., 1981, N 10, 2751-2759
作者:BROWNBRIDGE, P.、EGERT, E.、HUNT, P. G.、KENNARD, O.、WARREN, S.
DOI:——
日期:——
Synthesis of butenolides from α-(phenylthio)-ketones and -esters: crystal structure of an intermediate β-phenylthio-γ-lacton
作者:Peter Brownbridge、Ernst Egert、Paul G. Hunt、Olga Kennard、Stuart Warren
DOI:10.1039/p19810002751
日期:——
stereoselectively to β-phenylthio-γ-butyrolactones. Oxidation to sulphoxides and thermolysis provides a general synthesis of β- and γ-substituted Δαβ-butenolides. Treatment of 5,5-dimethyl-4-oxo-3-(phenylthio)-hexanoic acid with NaBH4 gives a single γ-lactone whose PhS and But groups are shown to be cis by an X-ray crystal structure determination.