Lithiated Dimethylketene Diisopropyl Dithioacetal as a Synthon of Homoenolate Dianion of Isobutyric Ester. An Application to the Synthesis of α-Methyllactones

DOI: 10.1246/cl.1986.1675

Source and publish data:

Chemistry Letters p. 1675 - 1678 (1986)

Update date:2022-08-03

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Authors:

Fujisawa, Tamotsu

Umezu, Kazuto

Suzuki, Masahiro

Sato, Toshio

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Article abstract of DOI:10.1246/cl.1986.1675

Lithium anion of dimethylketene diisopropyl dithioacetal reacted with various kinds of electrophiles to afford γ-substituted products with high regioselectivity.The utility of the lithiated ketene dithioacetal, a novel homoenolate dianinon equivalent of isobutyric ester, was demonstrated in the synthesis of α-methylenelactones.

Full text of DOI:10.1246/cl.1986.1675

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