Directed synthesis of alkyl-substitued pyrrolo[3,4-c]pyrrole-1,3,4,6-tetraones
摘要:
Reactions of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-ene-4-carbonitriles with aqueous hydrohalic acid led to the formation of alkyl-substituted pyrrolo[3,4-c]-pyrrole-1,3,4,6-tetraones.
The rare transformation of 2,7-diazaspiro[4.4]nonanes in furo[3,4-c]pyridines
作者:Sergey V. Fedoseev、Oleg V. Ershov、Konstantin V. Lipin、Mikhail Yu. Belikov
DOI:10.1039/c5ra27585g
日期:——
Transformation of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-en-4-carbonitriles to the obtaining of two classes fused heterocycles: 4-halogen-3-hydroxy-1,3-dihydrofuro[3,4-c]pyridin-1-ones and octahydropyrrolo[3,4-c]pyrrole-1,3,4,6-tetraones.