Synthesis of Imidazole Spiro Compounds From 5-Alkoxycarbonyl-1H-Pyrrole-2,3-Diones and Phenylurea
作者:Aleksei Yu. Dubovtsev、Ekaterina S. Denislamova、Pavel S. Silaichev、Maksim V. Dmitriev、Andrey N. Maslivets
DOI:10.1007/s10593-016-1913-8
日期:2016.7
arbamoyl)amino]-2,5-dihydro-1H-pyrrole-2-carboxylates, which cyclize in the presence of sodium methoxide, giving 8-hydroxy-3-phenyl-1,3,6-triazaspiro[4.4]-non-8-ene-2,4,7-triones. The crystal structures of 8-hydroxy-9-(4-methylbenzoyl)-3-phenyl-6-(p-tolyl)-1,3,6-triazaspiro[4.4]non-8-ene-2,4,7-trione and methyl 8-hydroxy-2,4,7-trioxo-3,6-diphenyl-1,3,6-triazaspiro[4.4]non-8-ene-9-carboxylate were studied
5-烷氧基羰基取代的1 H-吡咯-2,3-二酮与苯基脲反应,形成烷基4-羟基-5-氧代-2-[(苯基氨基甲酰基)氨基] -2,5-二氢-1 H-吡咯-2 -羧酸盐,其在甲醇钠存在下环化,得到8-羟基-3-苯基-1,3,6-三氮杂螺[4.4]-非-8-烯-2,4,7-三酮。8-羟基-9-(4-甲基苯甲酰基)-3-苯基-6-(对甲苯基)-1,3,6-三氮杂螺[4.4] non-8-ene-2,4,7-的晶体结构研究了三酮和8-羟基-2,4,7-三氧代-3,6-二苯基-1,3,6-三氮杂螺[4.4]非-8-烯-9-羧酸甲酯。