Regiospecific and convergent synthesis of α-phenylthio-ketones
作者:Philip Blatcher、Stuart Warren
DOI:10.1039/c39760001055
日期:——
Adducts of bis(phenylthio) carbanions and aldehydes give unrearranged α-phenylthio-ketones on treatment with toluene-p-sulphonic acid.
双(苯硫基)碳负离子和醛的加合物在用甲苯-对-磺酸处理时得到未重排的α-苯硫基-酮。
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.
A facile and efficient protocol for the α-benzoyloxylation of β-keto sulfides is presented. This methodology provides a step-economical, mild and practical access to highly functionalized α-O-benzoyloxy substituted β-keto sulfides, including those with quaternary carbons, which are not easily obtained through currently available methods.