Reactions with 2-Aza-1,3-butadiene Derivatives, 2.- A Facile Access to the Pyrrolopyrimidine and Pyrrolopyridine System
3-Methylindole (4) as well as pyrrole derivatives 7 react under proton catalysis with 2-azabutadiene 2a in the α-position.The subsequent ring closure into a free neighbouring position (N or C), which is also affected by further substituents, furnishes the pyrrolopyrimidine 5 and 8, resp., and/or the pyrrolopyridine 9.
Biere, Helmut,Russe, Rolf
p. 491 - 494
(2007/10/02)
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