Intramolecular Diels—Alder reaction of 4-(N-furfuryl)aminobut-1-enes. New approach to the synthesis of 6,8a-epoxyoctahydroisoquinoline (3-aza-11-oxatricyclo[6.2.1.0<sup>1,6</sup>]undec-9-ene) derivatives
作者:F. I. Zubkov、E. V. Nikitina、K. F. Turchin、A. A. Safronova、R. S. Borisov、A. V. Varlamov
DOI:10.1023/b:rucb.0000037856.61928.c4
日期:2004.4
The intramolecular Diels—Alder reaction of readily accessible 4-substituted 4-(N-furfuryl)aminobut-1-enes was studied and a new one-step method was developed for the synthesis of 6,8a-epoxy-1,2,3,4,4a,5,6,8a-octahydroisoquinoline (3-aza-11-oxatricyclo[6.2.1.01,6]undec-9-ene) derivatives. The [4+2]-cycloaddition proceeds stereoselectively to form exo-adducts. The influence of substituents at the nitrogen
研究了易于获得的 4-(N-糠基)氨基丁-1-烯的分子内 Diels-Alder 反应,并开发了一种新的一步法合成 6,8a-epoxy-1,2,3 ,4,4a,5,6,8a-八氢异喹啉(3-aza-11-oxatricyclo[6.2.1.01,6]undec-9-ene)衍生物。[4+2]-环加成立体选择性地进行以形成外加合物。检查了 4-(N-糠基) 氨基丁-1-烯中氮原子上的取代基对环加成途径的影响。