A highly stereoselective synthesis of 3,4-dihydro-1(2H)-isoquinolinones and 8-oxoberbines from homophthalic anhydrides and azomethines
作者:M.A. Haimova、N.M. Mollov、S.C. Ivanova、A.I. Dimitrova、V.I. Ognyanov
DOI:10.1016/0040-4020(77)80114-2
日期:1977.1
The interaction between 1,3-isochromanediones(homophthalic anhydrides) 1 and acyclic azomethines of types 2 and 3 and the cyclic 6,7-dimethoxy-3,4-dihydroisoquinoline 4 is investigated. The former lead in high yields to the (±)-trans-3-aryl-4-carboxy-3,4-dihydro-1(2H)-isoquinolinones 5, while the latter gives the (±)-cis-13-carboxy-8-oxoberbines 7. The relative configurations of compounds 5–8 as well
研究了1,3-异二氰基二阴离子(均苯二酸酐)1与2和3型无环甲亚胺与环状6,7-二甲氧基-3,4-二氢异喹啉4的相互作用。以高产率的(±)前铅-反式的3-芳基-4-羧基-3,4-二氢- 1(2 ħ)异喹啉酮5,而后者使(±) -顺-13-羧基8-氧代苯丁二烯7。化合物5-8的相对构型,以及某些5型化合物和所有6型化合物的优选构象是通过化学相关性和NMR确定的。