On the Reaction of Isatin with Cyanomethylene(triphenyl)-phosphorane. A Nucleophilic Attack of Alkyl Phosphites on the Carbon–Carbon Double Bond of (E)-Oxindolylideneacetonitrile
作者:Fayez H Osman、Fatma A El-Samahy
DOI:10.1016/s0040-4020(99)01065-0
日期:2000.3
The reaction of cyanomethylene(triphenyl)phosphorane (2) with isatin (1) in dry benzene at room temperature for 1 h led to the formation of (1,2-dihydro-2-oxo-3H-indol-3-yl)acetonitrile as a mixture of E- and Z-stereo isomers 3 and 4. Trialkyl phosphites 7 reacted with (E)-nitrile 3 in dry benzene at 70°C for about 10 h to give the phosphonates 8 as two isomers together with the unexpected spiro products
Palladium-catalyzed asymmetric allylic amination of racemic butadiene monoxide with isatin derivatives
作者:Gen Li、Xiangqing Feng、Haifeng Du
DOI:10.1039/c5ob00663e
日期:——
been well developed. However, the asymmetric substitution reaction with isatins and their derivatives as nucleophiles based on the free N–H groups has been less studied due to the relatively weaker nucleophilicity resulting from the two electron-withdrawing carbonyl groups. In this paper, a palladium-catalyzed asymmetric allylic amination of racemic butadiene monoxide with isatin derivatives using a