The Ruppert–Prakash reagent is the most powerful and well-documented reagent for trifluoromethylation. Despite its versatility, no general method exists for its use in a flow system. Here we report the first flow trifluoromethylation of carbonylcompounds and its utility for drug synthesis of efavirenz and HSD-016, including preliminary results of enantioselective variants.
MgCl 2 -catalyzed trifluoromethylation of carbonyl compounds using (trifluoromethyl)trimethylsilane as the trifluoromethylating agent
作者:Bin Cui、Hui Sun、Yibo Xu、Lili Duan、Yue-Ming Li
DOI:10.1016/j.tet.2017.10.021
日期:2017.11
Using (trifluoromethyl)trimethylsilane (TMSCF3) as the trifluoromethylating agent, MgCl2-catalyzed trifluoromethylation of carbonylcompounds proceeded readily at room temperature. In the presence of 10 mol% of MgCl2, a variety of carbonyl substrates such as aliphatic/aromatic aldehydes, acyclic/cyclic ketones and esters could be trifluoromethylated in DMF, giving the corresponding trimethylsilyl ethers
Lewis base-catalyzed perfluoroalkylation of carbonyl compounds and aldimines with (perfluoroalkyl)trimethylsilanes (TMSCF3, TMSC2F5, and TMSC3F7) is described. The nitrogen- or oxygen-containing an...
One Flask Preparation of Trifluoromethylated Amides from Ketones and Trifluoromethyltrimethylsilane <i>via</i> Ritter Reaction with Nitriles
作者:Emily Tongco、G. Surya Prakash、George Olah
DOI:10.1055/s-1997-989
日期:1997.10
Trifluoromethylated amides are prepared in a simple one-flask reaction via the Ritter reaction of the corresponding trifluoromethylated silyl ethers, which themselves are readily obtained from the starting ketones and trifluoromethyltrimethylsilane. The yields are good to average.