Metal-free oxidative tandem coupling of activated alkenes with carbonyl C(sp2)–H bonds and aryl C(sp2)–H bonds using TBHP
作者:Ming-Bo Zhou、Ren-Jie Song、Xuan-Hui Ouyang、Yu Liu、Wen-Ting Wei、Guo-Bo Deng、Jin-Heng Li
DOI:10.1039/c3sc50810b
日期:——
A metal-free oxidative tandem coupling of activatedalkenes with carbonyl C(sp2)–H bonds and arylC(sp2)–H bonds using TBHP is established for the synthesis of 3-(2-oxoethyl)indolin-2-ones. This method allows 1,2-difunctionalization of the C–C double bond in N-arylacrylamides by simultaneous formation of two C(sp2)–C(sp3) bonds.
The Reaction of Isatin with Alkoxycarbonylmethylene (Triphenyl)Phosphoranes
作者:Fayez H. Osman、Fatma A. El-Samahy
DOI:10.1080/10426509808545485
日期:1998.2.1
Isatin (1) reacted with alkoxycarbonylmethylene(triphenyl)phosphoranes (2) in boiling benzene for about 3 h to give orange yellow crystalline products of alkyl (1,2-dihydro-2-oxo-3H-indol-3-yl)acetates (3). The double bond of compounds 3 was reduced with zinc dust in boiling acetic acid to give 5, which upon methylation with methyl iodide in dry acetone and anhydrous potassium carbonate yielded the
Iron-Catalyzed Arylalkoxycarbonylation of <i>N</i>-Aryl Acrylamides with Carbazates
作者:Xiangsheng Xu、Yucai Tang、Xiaoqing Li、Guo Hong、Mingwu Fang、Xiaohua Du
DOI:10.1021/jo402529r
日期:2014.1.3
A novel arylalkoxycarbonylation of N-aryl acrylamides with carbazates leading to alkoxycarbonylated oxindoles has been developed. The reported reactions employ economical and environmentally benign FeCl2 center dot 4H(2)O as a catalyst and easily accessible and safe carbazates as alkoxycarbonyl radical precursors.
Synthesis of oxindole-3-acetates through iron-catalyzed oxidative arylalkoxycarbonylation of activated alkenes
An iron-catalyzed alkoxycarbonylation/cyclization reaction of N-arylacrylamides with carbazates has been developed. This new alkene difunctionalization reaction provides an efficient and straightforward method to obtain various ester-containing oxindoles. (C) 2014 Elsevier Ltd. All rights reserved.