Access to Aryl and Heteroaryl Trifluoromethyl Ketones from Aryl Bromides and Fluorosulfates with Stoichiometric CO
作者:Martin B. Johansen、Oliver R. Gedde、Thea S. Mayer、Troels Skrydstrup
DOI:10.1021/acs.orglett.0c01117
日期:2020.6.5
trifluoromethyl ketones starting from readily accessible aryl bromides and fluorosulfates, the latter easily prepared from the corresponding phenols. The methodology utilizes low pressure carbon monoxide generated ex situ from COgen to generate Weinreb amides as reactive intermediates that undergo monotrifluoromethylation affording the corresponding aromatic trifluoromethyl ketones (TFMKs) in good
我们报告了从容易获得的芳基溴化物和氟代硫酸盐开始的顺序一锅法制备芳族三氟甲基酮的方法,后者很容易从相应的苯酚制备。该方法利用产生低压一氧化碳易地从热电联产产生的Weinreb酰胺作为经历monotrifluoromethylation得到良好的收率的相应的芳族三氟甲基酮(TFMKs)的活性中间体。通过化学计量使用CO,可以通过切换使用13 COgen来访问13 C同位素标记的TFMK。