我们描述了一个 (salen)Mn( III ) 催化的醛、烯烃和叠氮化钠的三组分反应,用于将两个有用的基团(CO 和 N 3)安装到双键中。传统上,(salen)Mn( III ) 与碘代苯结合是烯烃环氧化的经典催化体系。由于具有高度竞争性的氧化方法,基于这种 (salen)Mn( III ) 催化系统建立独特的探索新烯烃转化的策略是一个真正的挑战。在此,这种 (salen)Mn( III ) 催化的烯烃酰叠氮化反应的关键是合理应用氧锰( V ) 的独特反应性。) 能够从底物 C-H 键中提取氢原子的物质。这种化学选择性反应发生在精确设计的反应序列中,并且可以容忍复杂的分子结构。
Lewis- and Brønsted-acid cooperative catalytic radical coupling of aldehydes and azodicarboxylate
作者:Hong-Bo Zhang、Yao Wang、Yun Gu、Peng-Fei Xu
DOI:10.1039/c4ra05028b
日期:——
An efficient radical coupling reaction of aldehydes and azodicarboxylate was developed by using the strategy of merging Lewis- and Brønsted- acid catalysis.
Functionalisation of aldehydes via aerobic hydroacylation of azodicarboxylates ‘on’ water
作者:Vijay Chudasama、Jenna M. Ahern、Dipti V. Dhokia、Richard J. Fitzmaurice、Stephen Caddick
DOI:10.1039/c0cc04520a
日期:——
Herein we report the functionalisation of aldehydesvia hydroacylation of azodicarboxylates. A range of functionalised aldehydes are employed as the limiting reagent including chiral non-racemic aldehydes bearing α-stereocentres which are functionalised giving access to enantiomerically pure products. The resultant hydrazides can be employed as acyl donors in the synthesis of amides.
(Salen)Mn(<scp>iii</scp>)-catalyzed chemoselective acylazidation of olefins
作者:Liang Zhang、Shuya Liu、Zhiguo Zhao、Hongmei Su、Jingcheng Hao、Yao Wang
DOI:10.1039/c8sc01882k
日期:——
three-component reaction of aldehydes, olefins, and sodium azide for the installation of two useful groups (CO and N3) into the double bond. Traditionally, (salen)Mn(III) in conjunction with iodosobenzene is a classical catalysis system for epoxidation of olefins. Owing to the highly competitive oxygenation approaches, it is a true challenge to establish a distinct strategy for the exploration of new olefin transformations
我们描述了一个 (salen)Mn( III ) 催化的醛、烯烃和叠氮化钠的三组分反应,用于将两个有用的基团(CO 和 N 3)安装到双键中。传统上,(salen)Mn( III ) 与碘代苯结合是烯烃环氧化的经典催化体系。由于具有高度竞争性的氧化方法,基于这种 (salen)Mn( III ) 催化系统建立独特的探索新烯烃转化的策略是一个真正的挑战。在此,这种 (salen)Mn( III ) 催化的烯烃酰叠氮化反应的关键是合理应用氧锰( V ) 的独特反应性。) 能够从底物 C-H 键中提取氢原子的物质。这种化学选择性反应发生在精确设计的反应序列中,并且可以容忍复杂的分子结构。