Transannular Reactions of Two Non-Parallel 1,3-Butadiyne Units− Syntheses, Structures and Protonation Reactions of 1-Isopropyl-1-azacyclopentadeca-3,5,11,13-tetrayne and 1-Isopropyl-1-azacyclohexadeca-3,5,12,14-tetrayne
作者:Erik M. Schmidt、Rolf Gleiter、Frank Rominger
DOI:10.1002/ejoc.200400088
日期:2004.7
of 15a and 15b revealed a non-parallel orientation of the 1,3-butadiyne units. The reaction of 15b with concd. HCl in ethanol yielded 5,12-dichloro-2-isopropyl-1,2,3,6,7,8,9,10-octahydrocyclonona[e]isoindole (16c) and 5-chloro-2-isopropyl-2,3,6,7,8,9,10,11-octahydrocyclonona[e]isoindol-12(1H)-one (17c). A mechanism for the reaction of 15b with HCl is proposed. The reaction of 15a with concd. HCl in
1-isopropyl-1-azacyclopentadeca-3,5,11,13-tetrayne (15a) 和 1-isopropyl-1-azacyclohexadeca-3,5,12,14-tetrayne (15b) 的合成是分步完成的. 关键中间体是 1,14-dibromotetradeca-2,4,10,12-tetrayne (14a) 和 1,15-dibromopentadeca-2,4,11,13-tetrayne (14b)。通过与异丙胺反应实现15a和15b的环闭合。对 15a 和 15b 单晶的 X 射线研究揭示了 1,3-丁二炔单元的非平行取向。15b与浓的反应。HCl 在乙醇中产生 5,12-二氯-2-异丙基-1,2,3,6,7,8,9,10-八氢环壬[e]异吲哚 (16c) 和 5-氯-2-异丙基-2,3 ,6,7,8,9,10,11-八氢环壬酮 [e