Kinetics and enantioselectivity of the Baeyer-Villiger oxidation of cyclohexanones by chiral tetrapyridyl oxoiron(IV) complex
作者:Ramona Turcas、Dóra Lakk-Bogáth、Gábor Speier、József Kaizer
DOI:10.1016/j.inoche.2018.04.024
日期:2018.6
Abstract The previously reported oxoiron(IV) complex, [FeIV(asN4Py)(O)]2+ with chiral pentadentate ligand, asN4Py (asN4Py = N,N‑bis(2‑pyridylmethyl)‑1,2‑di(2‑pyridyl)ethylamine), is effective for the Baeyer-Villiger oxidation of cyclohexanone derivatives. The reaction is shown to be first order in both cyclohexanone and the oxoiron(IV) species. The second order rate constant is smaller by one order
摘要 先前报道的氧代铁 (IV) 配合物 [FeIV(asN4Py)(O)]2+ 与手性五齿配体 asN4Py (asN4Py = N,N-bis(2-pyridylmethyl)-1,2-di(2-pyridylmethyl)-1,2-di(2-pyridyl )乙胺),对环己酮衍生物的拜尔-维利格氧化有效。该反应在环己酮和氧代铁 (IV) 物种中均显示为一级反应。二阶速率常数比相关的非手性 [FeIV(N4Py)(O)]2+ 复合物小一个数量级。通过手性氧代铁 (IV) 配合物氧化 4-取代的环己酮衍生物可达到中等对映选择性,对映体过量 (ee) 高达 45%。