Robust cyclometallated Ir(iii) catalysts for the homogeneous hydrogenation of N-heterocycles under mild conditions
作者:Jianjun Wu、Jonathan H. Barnard、Yi Zhang、Dinesh Talwar、Craig M. Robertson、Jianliang Xiao
DOI:10.1039/c3cc44567d
日期:——
Cyclometallated Cp*Ir(N∧C)Cl complexes derived from N-aryl ketimines are highly active catalysts for the reduction of N-heterocycles under ambient conditions and 1 atm H2 pressure. The reaction tolerates a broad range of other potentially reducible functionalities and does not require the use of specialised equipment, additives or purified solvent.
An iridium-catalyzed hydrogentransfer strategy, enabling straightforward access to tetrahydropyridine derivatives from aryl-1,8-naphthyridines and indolines was developed. This method has unprecedented advantages, including high step economy. In addition, it does not produce any byproducts or require an external high-pressure H2 gas source. The method offers an important platform for the transformation
开发了一种铱催化的氢转移策略,可以直接从 aryl-1,8-naphthyridines 和二氢吲哚获得四氢吡啶衍生物。这种方法具有前所未有的优势,包括高步骤经济性。此外,它不会产生任何副产品,也不需要外部高压 H 2气源。该方法为将 1,8-萘啶和二氢吲哚转化为功能化产品提供了重要平台。