使用水作为化学计量的 H 或 D 原子供体的简单烯烃和炔烃的催化转移氢化的例子很少。我们发现二硼试剂使用钯催化剂有效地介导了 H 或 D 原子从水中直接转移到不饱和 CC 键上。该反应在环境温度下对多种烯烃和炔烃进行,硼酸是唯一的副产物。机理实验表明,该反应是通过从水中的氢原子转移生成 Pd 氢化物中间体而实现的。重要的是,还实现了从化学计量的 D2O 中完全掺入氘。
Palladium-catalyzed cross-coupling reaction of azides with isocyanides
作者:Zhen Zhang、Zongyang Li、Bin Fu、Zhenhua Zhang
DOI:10.1039/c5cc05981j
日期:——
A palladium-catalyzed cross-coupling reaction of azides with isocyanides is developed, providing a general synthetic route to unsymmetric carbodiimides.
Clinprost, Isocarbacyclin And Analogs Thereof And Methods Of Making The Same
申请人:The University Of North Carolina At Greensboro
公开号:US20140114086A1
公开(公告)日:2014-04-24
In one aspect, methods of synthesizing clinprost, isocarbacyclin and analogs thereof are described herein which, in some embodiments, permit an abbreviated synthetic pathway in comparison to one or more prior synthetic methods. By providing a compact synthetic scheme, methods described herein can reduce cost, waste and time of clinprost and isocarbacyclin synthesis while facilitating the development and investigation of analogs of these compounds.
An Efficient Copper-Catalyzed One-Pot Synthesis of 1-Aryl-1,2,3-triazoles from Arylboronic Acids in Water under Mild Conditions
作者:Changbo Hao、Changjian Zhou、Jianwei Xie、Jie Zhang、Ping Liu、Bin Dai
DOI:10.1002/cjoc.201500643
日期:2015.11
A convenient method for one‐pot two‐step 1,3‐dipolar cycloadditon reaction of arylboronic acid, sodium azide followed with terminal alkynes in the presence of 2‐pyrrolecarbaldiminato‐Cu(II) complexes catalyst is reported. Various 1‐aryl‐1,2,3‐triazoles were prepared in 63%–97% yields in water at 30°C without any additives and avoiding the isolation of unstable aryl azides.
Photoredox-Catalyzed Four-Component Reaction for the Synthesis of Complex Secondary Amines
作者:Lisa Marie Kammer、Matthias Krumb、Benjamin Spitzbarth、Benjamin Lipp、Jonas Kühlborn、Jonas Busold、Olga M. Mulina、Alexander O. Terentev、Till Opatz
DOI:10.1021/acs.orglett.0c00614
日期:2020.5.1
The one-pot sulfonylation/aminoalkylation of styrene derivatives furnishing substituted γ-sulfonylamines was accomplished through a photoredox-catalyzed four-component reaction. Besides one molecule of water and the sodium counterion of the sulfinate, all atoms of the starting materials are transferred to the final product, rendering this process highly atom-efficient. The operationally simple protocol