On the reaction of carboxylic acids and isonitriles with conventional heating
摘要:
Control over the formation of N-formylamides versus the formation of captodative alkenes from the reaction of arylacetic acids with isonitriles has been achieved. Low temperatures and high concentrations favor alkenes, and high temperatures and low concentrations favor N-formylamides. (c) 2012 Elsevier Ltd. All rights reserved.
Facile reaction of carboxylic acids with isonitriles in toluene
作者:Jason G. Polisar、Ling Li、Jack R. Norton
DOI:10.1016/j.tetlet.2011.03.122
日期:2011.6
Isonitriles react with low concentrations of carboxylicacids in toluene at 110 °C to give N-formylamides in yields generally above 70%. These concentrations can be obtained either by syringe pump addition of a toluene solution of the acid, or by using a suspension of the acid if it has limited solubility in toluene at room temperature.
A novel efficient synthetic approach to 4-amino-2-trifluormethyl quinoline derivatives is described via palladium-catalyzed cascade reactions of isocyanides with readily available N-(ortho-iodo)aryl enamines under mild conditions. The target heterocycles can be found in many natural products or drugs, which were obtained in generally good to excellent yield.
Radical Cyanotrifluoromethylation of Isocyanides: Step-Economical Access to CF<sub>3</sub>-Containing Nitriles, Amines, and Imines
作者:Shuang Chen、Da-Fu Feng、Deng-Yuan Li、Pei-Nian Liu
DOI:10.1021/acs.orglett.8b02328
日期:2018.9.7
A novel copper-catalyzed radical cyanotrifluoromethylation has been achieved through a multicomponent reaction of isocyanides, Togni’s reagent, and trimethylsilyl cyanides, affording trifluoroacetimidoyl nitriles in good yields. This reaction demonstrates a unique feature of merging two valuable functional groups—trifluoromethyl (CF3) and cyan (CN)—onto the same C atom. The transformation proceeds
An efficient tandemreaction of 2-alkynylbenzaldoximes with isocyanides co-catalyzed by silver triflate and bismuth triflate has been developed, which gives rise to the unexpected N-(isoquinolin-1-yl)formamides in good to excellent yields. The iodo- and bromo-containing products could be obtained as well by variation of the reaction conditions.