A facile and general synthesis of various N-substituted cyanamides was accomplished by the Tiemann rearrangement of amidoximes with benzenesulfonyl chlorides (TsCl or o-NsCl) and DIPEA.
NOVEL NITRILE AND AMIDOXIME COMPOUNDS AND METHODS OF PREPARATION
申请人:Lee Wai Mun
公开号:US20090111965A1
公开(公告)日:2009-04-30
The present application relates to semiconductor processing compositions comprising at least one compound containing at least one amidoxime functional group and to methods of using these compositions in semiconductor processing. The present application also describes the preparation of amidoximes for a semiconductor processing composition by (a) mixing a cyanoethylation catalyst, a nucleophile and an alpha-unsaturated nitrile to produce a cyanoethylation product; and (b) converting a cyano group in the cyanoethylation product into an amidoxime functional group.
Palladium-catalyzed synthesis of 5-amino-1,2,4-oxadiazoles <i>via</i> isocyanide insertion
作者:Xu Wang、Jin-Ping Fu、Jia-Xing Xie、Qing-Hu Teng、Hai-Tao Tang、Ying-Ming Pan
DOI:10.1039/d0ob01092h
日期:——
palladium-catalyzed approach has been developed for the synthesis of 5-amino-1,2,4-oxadiazoles from amidoximes and isocyanides. Various 5-amino-1,2,4-oxadiazoles were obtained in moderate to high yields under mild conditions. The key to the success of this strategy involves new C–N bond and C–O bond formation via palladium-catalyzed isocyanide insertion.
associative covalentrelay process operates in rhodium(III)‐catalyzed oxadiazolone‐directed alkenyl C−H coupling with alkynes and allows efficient access to primarypyridinylamines. Although the primarypyridinylaminesynthesis mechanism is posteriori rationalized, the relay formalism formulated herein can provide an important mechanistic conceptual framework for future catalyst design and reaction development