Formal [3+3] Cyclocondensation of 4-Acyl-1H-pyrrole-2,3-diones with Five-Membered Cyclic Enamines To Form Substituted 1H-Pyrazolo[3,4-b]pyridines and Isoxazolo[5,4-b]pyridines
substituted 1H-pyrazolo[3,4-b]pyridines and isoxazolo[5,4-b]pyridines was developed through the formal [3+3] cascade cyclocondensation of 4-acyl-1H-pyrrole-2,3-diones as 1,3-bis-electrophiles with the five-membered cyclic enamines as 1,3-bis-nucleophiles. A highly efficient method for the preparation of multifunctional substituted 1H-pyrazolo[3,4-b]pyridines and isoxazolo[5,4-b]pyridines was developed through
摘要 通过4-酰基-1的正式[3 + 3]级联环缩合反应,开发了一种高效的制备多功能取代的1 H-吡唑并[3,4- b ]吡啶和异恶唑并[5,4- b ]吡啶的方法。H-吡咯-2,3-二酮为1,3-双亲电子试剂,五元环烯胺为1,3-双亲核试剂。 通过4-酰基-1的正式[3 + 3]级联环缩合反应,开发了一种高效的制备多功能取代的1 H-吡唑并[3,4- b ]吡啶和异恶唑并[5,4- b ]吡啶的方法。H-吡咯-2,3-二酮为1,3-双亲电子试剂,五元环烯胺为1,3-双亲核试剂。
Kozlov, A. P.; Perevozchikov, L. A.; Maslivets, A. N., Journal of Organic Chemistry USSR (English Translation), 1987, vol. 23, # 10, p. 1969 - 1974
作者:Kozlov, A. P.、Perevozchikov, L. A.、Maslivets, A. N.、Smirnova, L. I.、Andreichikov, Yu. S.
DOI:——
日期:——
Reaction of methyl 3-aroyl-1-aryl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates with arylhydrazines. synthesis of isomeric 5-arylcarbamoyl-4-aroyl- and 5-aryl-4-aryloxamoyl-1H-pyrazoles
作者:A. Yu. Dubovtsev、A. A. Moroz、M. V. Dmitriev、A. N. Maslivets
DOI:10.1134/s1070428016040126
日期:2016.4
Methyl 3-aroyl-1-aryl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates reacted with arylhydrazines to give methyl 3-aroyl-1-aryl-2-(2-arylhydrazinyl)-4-hydroxy-5-oxo-2,5-dihydro-1H-pyrrole-2-carboxylates which underwent thermal recyclization into isomeric methyl 1-aryl-5-(arylcarbamoyl)-4-aroyl-1H-pyrazole- 3-carboxylates and methyl 1,5-diaryl-4-[2-oxo-2-(arylamino)acetyl]-1H-pyrazole-3-carboxylates.
Kozlov, A. P.; Perevozchikov, L. A.; Maslivets, A. N., Journal of Organic Chemistry USSR (English Translation), 1988, vol. 24, # 10, p. 1982 - 1988
作者:Kozlov, A. P.、Perevozchikov, L. A.、Maslivets, A. N.、Smirnova, L. I.、Andreichikov, Yu. S.
DOI:——
日期:——
Maslivets, A. N.; Smirnova, L. I.; Andreichikov, Yu. S., Journal of Organic Chemistry USSR (English Translation), 1989, vol. 25, # 8.2, p. 1578 - 1582
作者:Maslivets, A. N.、Smirnova, L. I.、Andreichikov, Yu. S.