Palladium-Catalyzed β-Mesylation of Simple Amide via Primary sp<sup>3</sup> C–H Activation
作者:Ren Zhao、Wenjun Lu
DOI:10.1021/acs.orglett.7b00536
日期:2017.4.7
A beta-mesylation of primary sp(3) C-H bonds from simple amides with methanesulfonic anhydride; (Ms2O) has been established successfully A 80 degrees C in a Pd(OAc)(2) (catalyst)/K2S2O8 (oxidant)CF3CH2OH (solvent) system. These amide substrates involve N-monosubstituted linear,, branch, or cyclic alkanes, and electron-deficient benzyl compounds. The beta-mesylated amide products can be converted easily to beta-fluoroamideS or beta-lactams through inter- or intramolecular S(N)2 processes.