One-step synthesis of α,β-unsaturated arylsulfones by a novel multicomponent reaction of aromatic aldehydes, chloroacetonitrile, benzenesulfinic acid sodium salt
作者:Lei Zhang、Mao Hua Ding、Hong Yun Guo
DOI:10.1016/j.cclet.2012.10.013
日期:2012.12
Abstract A new and green method for the synthesis of α,β-unsaturated arylsulfones had been achieved through the condensation of aromatic aldehydes, chloroacetonitrile, benzenesulfinic acidsodiumsalt in the presence of 1-butyl-3-methyl imidazolium hydroxide ([bmim]OH) in EtOH under reflux. The ionic liquid was recovered and recycled for subsequent reactions. The advantages of this protocol were non-toxic
Organocatalytic Cascade Knoevenagel–Michael Addition Reactions: Direct Synthesis of Polysubstituted 2-Amino-4H-Chromene Derivatives
作者:Sanjay N. Jadhav、Seema P. Patil、Dipti Prava Sahoo、Dharitri Rath、Kulamani Parida、Chandrashekhar V. Rode
DOI:10.1007/s10562-019-03089-8
日期:2020.8
isotherms measurements, and they were successfully examined for the cascade type Knoevenagel–Michael addition reactions. The product yields associated with these substrates were optimized, and key reaction parameters affecting the yields were identified. The present catalytic method is simple and robust for diversity oriented synthesis which proceeds good to excellent yields without generating any hazards