Discovery of practical production processes for arylsulfur pentafluorides and their higher homologues, bis- and tris(sulfur pentafluorides): Beginning of a new era of “super-trifluoromethyl” arene chemistry and its industry
作者:Teruo Umemoto、Lloyd M Garrick、Norimichi Saito
DOI:10.3762/bjoc.8.53
日期:——
Various arylsulfur pentafluorides, ArSF(5), have long been desired in both academic and industrial areas, and ArSF(5) compounds have attracted considerable interest in many areas such as medicines, agrochemicals, and other new materials, since the highly stable SF(5) group is considered a "super-trifluoromethyl group" due to its significantly higher electronegativity and lipophilicity. This article
长期以来,学术和工业领域都需要各种芳基五氟化硫 ArSF(5),而 ArSF(5) 化合物在医药、农用化学品和其他新材料等许多领域引起了相当大的兴趣,因为高度稳定的 SF( 5)由于其显着更高的电负性和亲油性,被认为是“超三氟甲基”。本文介绍了从相应的二芳基二硫化物或芳基硫醇生产各种芳基五氟化硫及其高级同系物双和三(五氟化硫)的第一种实用方法。该方法包括两个步骤:(步骤 1)在碱金属氟化物存在下用氯处理二芳基二硫化物或芳基硫醇,(步骤2)用氟化物源,例如ZnF(2)、HF和Sb(III/V)氟化物处理所得的四氟化氯芳基硫。通过蒸馏或重结晶分离和表征中间体芳基硫氯四氟化物。揭示了这些新反应的各个方面并讨论了反应机制。由于该方法在成本、产率、实用性、适用性和大规模生产方面比以前的方法有了相当大的改进,这里描述的新方法可以用作经济生产各种五氟化芳基硫及其高级同系物的第一种实用方法,这可能会开启“