Epoxides magnified image , in which R can represent the groupings magnified image magnified image are converted by KO‐t‐C4H9 in dimethyl sulfoxide into derivatives of furan or dihydrofuran and/or alcohols with the enyne system CCCCCOH. The analogous episulfides ( magnified image ) give, in low yield, the expected thiophene derivatives.
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Schreurs et al. (1976) studied this question.
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