Conclusions
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1.
The reaction of the diethyl ester of carbethoxymethylphosphinic acid with aldehydes proceeds stereospecifically and leads to unsaturated esters with a trans-configuration of the double bond that arises.
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2.
The reaction of carbethoxymethylenetriphenylphosphorane and the diethyl ester of carbethoxymethylphosphinic acid with sterically unhindered ketones leads to a mixture of cis-trans isomers.
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3.
The results obtained agree with the generally accepted scheme of the Wittig reaction.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1341–1343, July, 1964
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Yanovskaya, L.A., Kucherov, V.F. Reaction of carbethoxymethylenetriphenylphosphorane and the diethyl ester of carbethoxymethylphosphinic acid with certain aldehydes and ketones. Russ Chem Bull 13, 1252–1254 (1964). https://doi.org/10.1007/BF00863147
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DOI: https://doi.org/10.1007/BF00863147