An Easy Direct Arylation of 3-Arylsydnones

Abstract

An easy one-step synthesis of 3,4-diarylsydnones from 3-arylsydnones and arylboronic acids by Pd-catalyzed C-H bond activation is described.

Alkyl amines and ethers as traceless hydride donors in [1,5]-hydride transfer cascade reactions

“…Considering that the crucial [1,5]-HT step of propargylic amines can be promoted by diverse metals, including [Cu], 7,9–21 [Zn], 22–33 [Au], 34–36 [Ag], 37 [Cd], 38–40 and [Pd], 41–45 we would like to divide the representative examples, for clarity, into six parts that apply different metal promoters.…”

“…9 As clearly shown in Scheme 4, the modified CuI/Cy 2 NH methodology could successfully afford a large number of functionalized allenes 4 , including allenyl ethers, N -allenyl amides, and allenols, in good to high yields, which manifested the obvious advantage of the combination CuI/Cy 2 NH. 10,11…”