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Oxokohlenstoffe und verwandte Verbindungen; 14. Mitteilung. Chemie der Semiquadratsaeure: Reaktive Semiquadratsaeure-Abkoemmlinge und deren Umsetzung mit N-Nucleophilen
Schmidt, Arthur H.,Debo, Michael,Wehner, Bernhard
, p. 237 - 242 (2007/10/02)
Starting from semisquaric acid (1), the semisquaric esters 6a-d and semisquaric chloride (7) were prepared.Reaction of 6c or 7 with amines as well as the method of mixed anhydrides, starting from 1, afforded the semisquaric amides 10a-n (Methods A, B, C,
