反应详情

Sodium methane sulphinate (16 mmol) was added to a solution of 2-chloro-2-methoxycarbonylthiophene-3(2H)-one in acetic acid (20 ml) containing sulphuric acid (1.3 ml). After standing for 24 hours the precipitate was filtered, m.p. 138°-140° C. (acetic acid).

1. filtrationthe precipitate was filtered