Intramolecular cyclization of 4-acetyl-2,2-diethoxycarbonyl-2,3-dihydro-1-(2-nitrobenzoyl)pyrrole by catalytic reduction
作者:P. De Caprariis、G. De Martino、E. Abignente、A. Sacchi
DOI:10.1002/jhet.5570270341
日期:1990.3
Catalytic hydrogenation of 4-acetyl-2,2-dicthoxycarbonyl-2,3-dihydro-1-(2-nitrobenzoyl)pyrrole 2 afforded 3-acetyl-1,1-diethoxycarbonyl-1,2,3,3a,4,9-hexahydro-9-oxopyrrolo[2,1-b]quinazoline 3 and the 4-hydroxy derivative 4, together with two tetrahydro analogs 5 and 6 of 3. Compounds 5 and 6 were also obtained by dehydration of 4.
4-乙酰基-2,2-二乙氧基羰基-2,3-二氢-1-(2-硝基苯甲酰基)吡咯2的催化加氢得到3-乙酰基-1,1-二乙氧基羰基-1,2,3,3a,4,9 -六氢-9-氧代吡咯并[2,1- b ]喹唑啉3和4-羟基衍生物4具有两个四氢类似物,一起5和6的3。化合物5和6也通过将4脱水而获得。