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Aminoethynyl Metallations, 11. - Reaction of Silylated and Stannylated Ynamines with Carbodiimides
Himbert, Gerhard,Schwickerath, Willi
, p. 1185 - 1193 (2007/10/02)
Regularly, the (silylethynyl)- and (stannylethynyl)amines 1 react with the diarylcarbodiimides 2 to form the 2,4-diamino-3-silyl- and 2,4-diamino-3-stannylquinolines 4, respectively, and the 3-aminopropiolamidines 6.This branching reaction is mechanistically explainable by the zwitterion 3 playing the role of the mutual intermediate.
