Synthesis and reactivity of 5-Br(I)-indolizines and their parallel cross-coupling reactions
作者:Alexey G. Kuznetsov、Alexander A. Bush、Eugene V. Babaev
DOI:10.1016/j.tet.2007.11.017
日期:2008.1
to be passive toward nucleophiles, whereas they may be trifluoroacetylated at C-3 and involved in reaction with DMAD giving cycl[3.2.2]azine. The first successful Suzuki-coupling of 5-bromo(iodo)indolizines with different arylboronic acids (performed as a parallel synthesis) led to a series of 5-arylindolizines; the effect of substituents on the reaction yield was examined.
(Aza)indolizines and ethyl propiolate: [8+2] and [1,10] cyclizations
作者:Eugene V. Babaev、Ivan A. Shadrin、Viktor B. Rybakov
DOI:10.1007/s10593-018-2270-6
日期:2018.3
(Aza)indolizines reacted with ethylpropiolate regioselectively forming (aza)[2.2.3]cyclazines. The Sonogashira reaction of 5-iodo(aza)-indolizines and acetylenes led to 5-ethynyl(aza)indolizines. In the case of indolizine derivative the by-product was ethynylcyclazine. The structures of [2.2.3]cyclazines were proved by X-ray structural analysis.