2-(N-Allylaminomethyl)cinnamaldehydes as substrates for syntheses of aza-polycycles via intramolecular cycloaddition reactions
作者:Amita Mishra、Neeraj Rastogi、Sanjay Batra
DOI:10.1016/j.tet.2012.01.016
日期:2012.3
Syntheses of a variety of aza-polycycles employing 2-(N-allylaminomethyl)cinnamaldehydes derived from Morita–Baylis–Hillman adducts of acrylates via intramolecular 1,3-dipolar cycloaddition, or Aza-Diels–Alder or domino Knoevenagel/hetero Diels–Alder cycloaddition reactions are described. Whereas the Aza-Diels–Alder afforded a mixture of cis- and trans-isomers of substituted 1,2,3,4,4a,5,10,10a-octahydrobenzo[b][1
通过分子内的1,3-偶极环加成反应,或由Aza-Diels-Alder或多米诺Knoevenagel /杂Diels-Alder衍生的2-(N-烯丙基氨基甲基)肉桂醛,由Morita-Baylis-Hillman加合物衍生的各种氮杂多环化合物的合成描述了环加成反应。而Aza-Diels-Alder提供了取代的1,2,3,4,4a,5,10,10a-八氢苯并[ b ] [1,6]萘啶的顺式和反式异构体的混合物,而1,3 -偶极环加成反应和多米诺Knoevenagel /杂Diels–Alder非对映选择性,仅产生1,2,3,4,4a,6,7,8,9,9a-十氢-1 H-吡啶基的顺式衍生物[3,4 - b ]吡咯基-8a-羧酸盐和反-3,4,4a,5,7,8,9,10b -八氢-1- ħ -chromeno [3,4 ç] pyridin-10(2 H)-ones。