Direct allylation of aromatic and α,β-unsaturated carboxamides under ruthenium catalysis
作者:Mirim Kim、Satyasheel Sharma、Neeraj Kumar Mishra、Sangil Han、Jihye Park、Minyoung Kim、Youngmi Shin、Jong Hwan Kwak、Sang Hoon Han、In Su Kim
DOI:10.1039/c4cc03354j
日期:——
The ruthenium-catalyzed oxidative allylation of aromatic and alpha,beta-unsaturated carboxamides with allylic carbonates is described. These transformations proceed readily with complete linear gamma-selectivity of substituted allylic carbonates.
Tertiary amine synthesis via reductive coupling of amides with Grignard reagents
作者:Lan-Gui Xie、Darren J. Dixon
DOI:10.1039/c7sc03613b
日期:——
reductive coupling reaction of Grignard reagents and tertiary amides affording functionalised tertiary amine products via an efficient and technically-simple one-pot, two-stage experimental protocol, is reported. The reaction – which can be carried out on gram-scale using as little as 1 mol% Vaska's complex [IrCl(CO)(PPh3)2] and TMDS as the terminal reductant for the initial reductive activation step –
The present invention relates to novel compound of Formula I, wherein, R1, A1, A2, A3, A4, A5, L1, A, L2 and R2 are as defined in the detailed description. The present invention also relates to a combination or a composition comprising the compound of Formula I.
ruthenium‐catalyzed dehydrogenativesilylation of benzamides with 1,1,1,3,5,5,5‐heptamethyltrisiloxane took place at ortho‐positions of the benzene ring. Several benzamides containing both electron‐donating and electron‐withdrawing groups could be used in this silylation. Density functional theory (DFT) calculations and kinetic isotope effect experiments suggest that the catalytic cycle should involve the CSi bond