Five-membered 2.3-dioxo heterocycles: LXVIII. Three pathways in the reaction of methyl 3-aroyl-1-aryl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates with 3-amino-5,5-dimethylcyclohex-2-en-1-one
作者:E. S. Denislamova、A. N. Maslivets
DOI:10.1134/s1070428010030152
日期:2010.3
Methyl 3-aroyl-1-aryl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates reacted with 3-amino-5,5-dimethylcyclohex-2-en-1-one having no substituent on the nitrogen atom to give 3-aroyl-4-arylamino-6',6'-dimethyl-6',7'-dihydro-5H-spiro[furan-2,3'-indole]-2',4',5'(1'H,5'H)-triones or methyl 12-aroyl-11-aryl-9-hydroxy-5,5-dimethyl-3,10-dioxo-8,11-diazatricyclo[7.2.1.0(2,7)]dodec-2(7)-ene-1-carboxylates. The latter underwent thermal recyclization to 3'-aroyl-1'-aryl-4'-hydroxy-6,6-dimethyl-6,7-dihydrospiro[indole-3,2'-pyrrole]-2,4,5'(1H,1'H,5H)-triones.