Conclusions
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1.
Methyl isopropenyl ketone or methyl vinyl ketone react with thienyldichlorophosphine in the presence of acetic anhydride to respectively give 4,5-dimethyl-2-thienyl-2-oxo-l,2-oxa-4-phospholene and 5 -methyl-2-thienyl-2-oxo-1,2-oxa-4-phospholene.
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2.
The esters of thienyl-β-acetylalkylphosphinic acids were obtained by the reaction of 4,5-dimethyl-2-thienyl-2-oxo-1,2-oxa-4-phospholene or 5-methyl-2-thienyl-2-oxo-1,2-oxa-4-phospholene with alcohols.
Literature cited
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Additional information
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2785–2786, December, 1973.