strategy for aromatic trifluoromethylation by converting amino into trifluoromethyl groups via a Sandmeyer-type reaction is reported. The transformation involves diazotization of the aromatic amines with tert-butyl nitrite and hydrochloric acid to form aryldiazonium chlorides, followed by trifluoromethylation with trifluoromethylsilver at low temperature. Various readily available aromatic amines are
Synthesis of Pinacol Arylboronates from Aromatic Amines: A Metal-Free Transformation
作者:Di Qiu、Liang Jin、Zhitong Zheng、He Meng、Fanyang Mo、Xi Wang、Yan Zhang、Jianbo Wang
DOI:10.1021/jo3018878
日期:2013.3.1
A metal-free borylation process based on Sandmeyer-type transformation using arylamines derivatives as the substrates has been developed. Through optimization of the reaction conditions, this novel conversion can be successfully applied to a wide range of aromatic amines, affording borylation products in moderate to good yields. Various functionalized arylboronates, which are difficult to access by
A novel strategy for aromatic trifluoromethylation by converting aromatic amino group into CF3 group is reported herein. This method, which can be considered as trifluoromethylation variation of the classic Sandmeyer reaction, uses readily available aromatic amines as starting materials and is performed under mild conditions.
New Compounds. Derivatives of 2,5-Diaminobenzenesulfonamide
作者:A Goldfarb
DOI:10.1021/ja01244a061
日期:1943.4
Jensen et al., Dansk Tidsskrift for Farmaci, 1944, vol. 18, p. 201,206