Spiro-condensation of 5-methoxycarbonyl-1H-pyrrole-2,3-diones with cyclic enoles to form spiro substituted furo[3,2-c]-coumarins and quinolines
作者:Alexey Yu. Dubovtsev、Pavel S. Silaichev、Mikhail A. Nazarov、Maksim V. Dmitriev、Andrey N. Maslivets、Michael Rubin
DOI:10.1039/c6ra16889b
日期:——
Highly efficient spiro-cyclization enabling cyclic enoles to act as 1,3-bis-nucleophiles in reaction with pyrrole-2,3-diones acting as 1,2-bis-electrophiles was developed.
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。
Regiodivergent condensation of 5-alkoxycarbonyl-1<i>H</i>-pyrrol-2,3-diones with cyclic ketazinones en route to spirocyclic scaffolds
作者:Alexey Yu Dubovtsev、Maksim V Dmitriev、Аndrey N Maslivets、Michael Rubin
DOI:10.3762/bjoc.13.218
日期:——
between two alternative directions affording derivatives of partially hydrogenated indole or benzofurane. The control of this regioselectivity is efficiently governed by stericeffects at the hydrazone moiety of the ketazinone reagent.
Five-membered 2,3-dioxo heterocycles: CV. Reaction of methyl 1-aryl-3-aroyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates with methyl 2-arylamino-4-(2-naphthyl)-4-oxobut-2-enoates. Crystal and molecular structure of substituted 1,7-diazaspiro[4.4]nonane
作者:E. S. Denislamova、A. Yu. Dubovtsev、P. A. Slepukhin、A. N. Maslivets
DOI:10.1134/s1070428014070148
日期:2014.7
Five-membered dioxoheterocycles: XCIX. Reaction of 1-aryl-4-aroyl-5-methoxycarbonyl-1H-pyrrole-2,3-diones with indoles. Crystal and molecular structure of substituted 2-(indol-3-yl)pyrrole
作者:E. S. Denislamova、P. A. Slepukhin、A. N. Maslivets
DOI:10.1134/s1070428014020146
日期:2014.2
1-Aryl-4-aroyl-5-methoxycarbonyl-1H-pyrrole-2,3-diones react with indole and 2-methylindole with the formation of methyl 1-aryl-3-aroyl-4-hydroxy-2-(1H-indol-3-yl)-5-oxo-2,5-dihydro-1H-pyrrole-2-carboxylates. Crystal and molecular structure of methyl 3-benzoyl-4-hydroxy-2-(2-methyl-1H-indol-3-yl)-5-oxo-1-phenyl-2,5-dihydro-1H-pyrrole-2-carboxylate was examined.