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.
Synthesis of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides ammonium salts
作者:S. V. Fedoseev、O. V. Ershov、M. Yu. Belikov、V. A. Tafeenko
DOI:10.1134/s107042801608008x
日期:2016.8
Reaction of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-en-4-carbonitriles with amines in 2-propanol at room temperature provided the corresponding ammonium salts of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides.
Synthesis of 3-amino-8-hydroxy-2-methyl-1,6-dioxo-2,7-diazaspiro[4.4]non-3-ene-4-carbonitriles
作者:S. V. Fedoseev、M. Yu. Belikov、K. V. Lipin、O. V. Ershov、O. E. Nasakin
DOI:10.1134/s1070428015080230
日期:2015.8
Synthesis of 9-alkyl-8-methoxy-8-methyl-1,3,6-trioxo-2,7-diazaspiro[4.4]nonane-4-carbonitriles
作者:S. V. Fedoseev、K. V. Lipin、O. V. Ershov、M. Yu. Belikov、V. A. Tafeenko
DOI:10.1134/s1070428016110105
日期:2016.11
A method of synthesis of 9-alkyl-8-methyl-8-methoxy-1,3,6-trioxo-2,7-diazaspiro[4.4]nonane-4-carbonitriles consisting in the reaction of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-ene-4-carbonitriles with methanol in the presence of sulfuric acid was developed.