CO‐Free Enantioselective Hydroformylation of Functionalised Alkenes: Using a Dual Catalyst System to Give Improved Selectivity and Yield
作者:Rachael Pittaway、Paul Dingwall、José. A. Fuentes、Matthew. L. Clarke
DOI:10.1002/adsc.201900640
日期:2019.9.17
Asymmetric Transfer HydroFormylation (ATHF) procedures using a highly active single catalyst system derived from 1,2‐bis‐((2,5)‐diphenylphospholano)ethane as chiral ligand has been studied. This reveals some highly successful reactions, but also significant limitations. The development of a new protocol in which a catalyst for formaldehyde decomposition to CO and H2 is combined with the catalyst of choice for
研究了使用由1,2-双-((2,5)-二苯基膦基)乙烷作为手性配体衍生的高活性单一催化剂体系进行的无一氧化碳不对称转移加氢甲酰化(ATHF)程序的范围。这揭示了一些非常成功的反应,但也有明显的局限性。描述了新方案的发展,在该方案中,将甲醛分解为CO和H 2的催化剂与随后进行不对称加氢甲酰化的选择催化剂结合使用。这使得有问题的ATHF反应得以显着改善。该新方法已用于生物活性分子的几种关键前体的合成中。