Some Derivatives of o-Thymotinic Acid *†

Sulfur Derivatives of o-Thymotic Acid

“…Attempted Carboxylation of Thiopheno1.-A modification of the Schmidt-Kolbe reaction (7) was attempted, wherein 23.71 Gm. (1.03 moles) of granulated sodium was slowly added to a boiling xylene solution of thiophenol(O.5 mole) while dry C02 was bubbled through the mixture.…”

“…The chlorosulfonate of o-thymotic acid itself was produced, according to the method of Chou, ct al. (7), by employing an excess of chlorosulfonic acid.…”