Sequential Nucleophilic Substitution of Phosphorus Trichloride with Alcohols in a Continuous‐Flow Reactor and Consideration of a Mechanism for Reduced Over‐reaction through the Addition of Imidazole
作者:Hiroshi Kitamura、Yuma Otake、Naoto Sugisawa、Hiroki Sugisawa、Tomonori Ida、Hiroyuki Nakamura、Shinichiro Fuse
DOI:10.1002/chem.202200932
日期:2022.7
sequential nucleophilic substitution of highly electrophilic and inexpensive phosphorus trichloride with three different alcohols including ones that contain acid- and/or basic-labile functionalities, and various asymmetric phosphotriesters were synthesized in good-to-high yields (53–83 %). Mechanistic study suggested that Berry pseudorotation was a rate-limiting step in the nucleophilic substitution
微流技术能够用三种不同的醇(包括含有酸和/或碱性不稳定官能团的醇)连续取代高度亲电且廉价的三氯化磷,并且以从好到高的产率 (53-83%) 合成了各种不对称磷酸三酯。机制研究表明,Berry 伪旋转是三氯化磷与醇的亲核取代中的限速步骤。