Denitrogenative palladium-catalyzed coupling of aryl halides with arylhydrazines under mild conditions
作者:Sheng Chang、Lin Lin Dong、Hai Qing Song、Bo Feng
DOI:10.1039/c8ob00305j
日期:——
development of a method for the Pd(II)-catalyzed denitrogenative coupling of arylhydrazines to give functionalized biaryls in good yield, using aryl bromides or aryl iodides as convenient and inexpensive aryl sources, is reported. High functional group tolerance is demonstrated for electronically distinct arylhydrazines as well as arylhalides. The desired products were isolated in good to excellent yields
Visible-light-mediated phosphonylation reaction: formation of phosphonates from alkyl/arylhydrazines and trialkylphosphites using zinc phthalocyanine
作者:Mehdi Koohgard、Mona Hosseini-Sarvari
DOI:10.1039/d1ob00848j
日期:——
protocol for the photoredox syntheses of arylphosphonates and, for the first time, alkyl phosphonates. Zinc phthalocyanine-photocatalyzed Csp2–P and Csp3–P bond formations were efficiently achieved by reacting aryl/alkylhydrazines with trialkylphosphites in the presence of air serving as an abundant oxidant. The reaction conditions tolerated a wide variety of functional groups.
在这项工作中,我们开发了一种无配体和无碱基的可见光介导方案,用于芳基膦酸盐的光氧化还原合成,并且首次用于烷基膦酸盐。锌酞菁光催化 C sp 2 -P 和 C sp 3 -P 键的形成是通过芳基/烷基肼与三烷基亚磷酸酯在空气作为丰富氧化剂的存在下反应有效实现的。反应条件容许多种官能团。
Novel Chemoselective Reduction of Aryldiazonium Fluoroborates with Zn–NiCl2·6H2O–THF
作者:B. P. Bandgar、L. S. Uppalla
DOI:10.1039/a905588f
日期:——
Substituted aryldiazonium fluoroborates are selectively reduced to the corresponding phenylhydrazines by using ZnâNiCl2·6H2O in THF as a reducing agent.
Novel compound for color-producing composition, and recording material
申请人:——
公开号:US20010044553A1
公开(公告)日:2001-11-22
A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:
10≧(
A+B
)≧3
wherein each of A and B is an integer of 1 or more.