A hot-melt ink composition for an ink jet printer, comprising a coloring agent, and a vehicle which comprises a dialkylbenzenesulfonamide, a monoalkylbenzenesulfonamide, and a resin; and a hot-melt ink composition comprising from 10 to 30 wt.% of a coloring agent, and a vehicle. These ink compositions can produce high quality images which have improved resistance to abrasion and are free from blooming.
Cu-catalyzed aerobic oxidative synthesis of sulfonamides from sulfonyl hydrazides and amines
作者:Sohyun Chung、Jinho Kim
DOI:10.1016/j.tetlet.2019.02.016
日期:2019.3
An environmentally friendly route for sulfonamides has been developed. The oxidative coupling of sulfonyl hydrazides and amines was catalyzed by CuBr2 to produce various sulfonamides with the water and nitrogen gas as byproducts. Preliminary experiments revealed that the sulfonyl radical is likely to be involved in the reaction mechanism.