Synthesis of sulfur-containing heterocycles: spiropyrimidinetriones, thioxopyrimidinediones, pyrazolidinediones, and isoxazolidinediones?part ii
作者:D. Bhaskar Reddy、N. Chandrasekhar Babu、V. Padmavathi
DOI:10.1002/hc.1021
日期:——
1-Aroyl-2-styrylsulfonylethene is the precursor for 4,4-dimethoxycarbonyl-2′,5-diaryl-3-(1′,3′-dioxolano)-1-thia-1,1-dioxide (4), which is the key intermediate for the synthesis of 7-aroyl-11-aryl-2,4-diazaspiro[5,5]undecane-1,3,5-trione-9-thia-9,9-dioxide(10)/3-thioxo-1,5-dione-9-thia-9,9-dioxide (11), 6-aroyl-10-aryl-2,3-diazaspiro[4,5]decane-1,4-dione-8-thia-8,8-dioxide (12)/2-oxo-3-azaspiro [4
1-Aroyl-2-styrylsulfonylethene 是 4,4-dimethoxycarbonyl-2',5-diaryl-3-(1',3'-dioxolano)-1-thia-1,1-dioxide (4) 的前体,它是合成 7-aroyl-11-aryl-2,4-diazaspiro[5,5]undecane-1,3,5-trione-9-thia-9,9-dioxide(10)/3 的关键中间体-thioxo-1,5-dione-9-thia-9,9-dioxide (11), 6-aroyl-10-aryl-2,3-diazaspiro[4,5]decane-1,4-dione-8- thia-8,8-dioxide (12)/2-oxo-3-azaspiro [4,5]decane-1,4-dione-8-thia-8,8-dioxide (13)。新化合物的特点是红外和