(E)-2-Oxoindolin-3-ylidene ketones can be easily isomerized to their (Z)-isomers by AlCl3 at room temperature in CH2Cl2. The behaviour of the unsaturated dicarbonyl framework in the (Z)-configuration as a bidentate ligand can be the key-step of the isomerization. The limits of a reaction that allows to prepare several yet-unknown products is discussed.
Hydroazidation of phenacylideneoxindoles: Synthesis of 3-substituted 3-azido-1,3-dihydro-2H-indol-2-ones via anti-electron addition
作者:Ailipire Aisikaer、Jing Ma、Jiajia Li、Xiaojuan Li
DOI:10.1016/j.tetlet.2023.154447
日期:2023.3
synthetic strategy of 3-substituted 3-azido-1,3-dihydro-2H-indol-2-ones was realized through hydroazidation of phenacylideneoxindoles with azidotrimethylsilane under mild conditions. In the presence of tetrabutylammonium fluoride, the reaction proceeds by the anti-electron addition of N3. This azidation method of phenacylideneoxindoles is valuable in pharmaceutical synthesis and chemical biology studies
A CONDENSATION OF ACETOPHENONE WITH ISATIN BY THE KNOEVENAGEL METHOD<sup>1</sup>
作者:H. G. Lindwall、J. S. Maclennan
DOI:10.1021/ja01351a034
日期:1932.12
Bansal, R. K.; Sharma, Diwakar; Jain, Jainendra K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 610 - 612
作者:Bansal, R. K.、Sharma, Diwakar、Jain, Jainendra K.
DOI:——
日期:——
Chemoselective synthesis of 3H-pyrrolo[2,3-c]quinolin-4(5H)-one derivatives from 3-phenacylideneoxindoles and substituted tosylmethyl isocyanide (TosMIC)
作者:Rong Wang、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1016/j.tet.2013.10.084
日期:2013.12
A simple and convenient synthetic approach to access of 3H-pyrrolo[2,3-c]quinolin-4(5H)-one derivatives by the reaction of (Z)-3-(2-oxo-2-ethylidene)indolin-2-one derivatives 1 with functionalized TosMICs under basic conditions has been reported. The desired products were obtained in good to excellent yields (82-94%). The easy accessibility of the starting materials, simple and mild reaction conditions, short reaction time, and good to excellent chemical yields make this methodology highly efficient. (C) 2013 Elsevier Ltd. All rights reserved.