An efficient decarboxylative trifluoromethylation of α,β-unsaturated carboxylic acids using the Langlois reagent as a trifluoromethyl precursor has been achieved by an electro-oxidative strategy. Under catalyst-free and external oxidant-free electrolysis conditions, a series of Cvinyl-CF3 compounds are obtained with a high regioselectivity in good yields. The successful trapping of the CF3 radical
(E)-Trimethyl-(3,3,3-trifluoroprop-1-enyl)silane (1) was synthesized as a reagent for use In Hiyama cross-coupling reactions for the production of beta-trifluoromethylstyrene derivatives. Cross-coupling of 1 with electronically diverse aryl iodides was achieved by treatment with CsF In the presence of catalytic amounts of palladium to afford the desired products In moderate to good yields.
Pyridone GPR119 G protein-coupled receptor agonists
申请人:Bristol-Myers Squibb Company
公开号:US08003796B2
公开(公告)日:2011-08-23
Novel compounds are provided which are GPR119 G protein-coupled receptor modulators. GPR119 G protein-coupled receptor modulators are useful in treating, preventing, or slowing the progression of diseases requiring GPR119 G protein-coupled receptor modulator therapy. These novel compounds have the structure Formula I or Formula IA.