Core Structure-Based Design of Organocatalytic [3+2]-Cycloaddition Reactions: Highly Efficient and Stereocontrolled Syntheses of 3,3′-Pyrrolidonyl Spirooxindoles
作者:Bin Tan、Xiaofei Zeng、Wendy Wen Yi Leong、Zugui Shi、Carlos F. Barbas、Guofu Zhong
DOI:10.1002/chem.201103449
日期:2012.1.2
Extraordinary levels of stereocontrol were achieved in an efficientorganocatalytic asymmetric [3+2]‐cycloaddition reaction between an α‐isothiocyanato imide and various methyleneindolinones. Simple precursors were used for the rapid construction of spirocyclic oxindole derivatives with high enantiopurity and structural diversity, thus providing a new avenue of significance to medicinal chemistry and
Heterodiene synthesis. Part XVII. Reactions of 2-oxoindolin-3-ylidene derivatives with enamines: a Michael pathway as an alternative to 1,2- and 1,4-cycloadditions
The reactions of enamines with 2-oxoindolin-3-ylidene-acetates and -acetophenones have been studied. With enamines derived from aldehydes the former gave either 1,2- or 1,4-cycloaddition products, as previously described for the latter. However, both substrates gave only Michael-type adducts with enamines derived from cyclopentanone. The mechanism is discussed in terms of both frontier orbital interaction
Reaction of 2-(2-oxo-2,3-dihydro-1H-indol-3-ylidene)acetic acid esters with benzene-1,2-diamine and 2-aminobenzenethiol
作者:V. O. Koz’minykh、V. I. Goncharov、K. Sh. Lomidze、E. N. Koz’minykh
DOI:10.1134/s1070428007010071
日期:2007.1
2-(2-Oxo-2,3-dihydro-1H-indol-3-ylidene)acetic acid esters reacted with benzene-1,2-diamine or 2-aminobenzenethiol to give (2-oxo-2,3-dihydro-1H-indol-3-yl)-substituted 3,4-dihydroquinoxalin-2(1H)-ones or 2H-1,4-benzothiazin-3(4H)-ones.
Reaction of 2-(2-Oxo-1,2-dihydro-3H-indol-3-ylidene)acetic acids esters with phenylhydrazine
作者:E. N. Koz’minykh、V. I. Goncharov、V. O. Koz’minykh、K. Sh. Lomidze、A. N. Berezin
DOI:10.1134/s107042800710017x
日期:2007.10
2-(2-Oxo-1,2-dihydro-3H-indol-3-ylidene)acetic acids esters reacted with phenylhydrazine yielding products of the regioselective addition of the latter in the alpha-(C-2)-position of the exo ethylene bond, (2-oxo-2,3-dihydro-1H-indol-3-yl)(2-phenylhydrazino)acetic acids esters.
CODA, ANDREINA CORSICO;DESIMONI, GIOVANNI;MONACO, HUGO LUIS;QUADRELLI, PA+, GAZZ. CHIM. ITAL., 119,(1989) N, C. 13-17
作者:CODA, ANDREINA CORSICO、DESIMONI, GIOVANNI、MONACO, HUGO LUIS、QUADRELLI, PA+