Article ID Journal Published Year Pages File Type
5267440 Tetrahedron Letters 2012 4 Pages PDF
Abstract
Reaction of 2,2-difluoro-1-tributylstannylethenyl p-toluenesulfonate (1) with bis(tributyltin) in the presence of 5 mol % Pd(PPh3)4 and 30 equiv LiBr in THF at reflux temperature for 7 h afforded (2,2-difluoroethenylidene)bis(tributylstannane) (2) in a 70% yield. Coupling reaction of 2 with aryl iodides in the presence of 5 mol % Pd(PPh3)4 and 5 mol % CuI in DMF at 80 °C for 3-4 h provided the coupled products 3 in 59-85% yields.
Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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