Isocyanide-Based Multicomponent Reactions: Synthesis of Alkyl-2-(1-(alkylcarbamoyl)-2,2-dicyanoethyl)benzoate and Isochromeno[3,4-b]pyrrole Derivatives
                                
                                    
                                        作者:Ebrahim Soleimani、Mohsen Zainali                                    
                                    
                                        DOI:10.1021/jo201908f
                                    
                                    
                                        日期:2011.12.16
                                    
                                    A novel four-component reaction between 2-formylbenzoic acids, malononitrile, isocyanides, and alcohols has been developed for a highly efficient preparation of alkyl-2-(1-(alkylcarbamoyl)-2,2-dicyanoethyl)benzoate derivatives. This high atom economy reaction led to the construction of two carbon carbon bonds, one amide, and one ester group in a single synthetic step. Furthermore, a three-component reaction between 2-formylbenzoic acids, malononitrile, and isocyanides in dichloromethane for the preparation of isochromeno[3,4-b]pyrroles has been reported.