73660-82-9Relevant academic research and scientific papers
S,O-ligand-promoted palladium-catalyzed C–H olefination of arenes with allylic substrates
Naksomboon, Kananat,álvarez-Casao, Yolanda,Uiterweerd, Michiel,Westerveld, Nick,Maciá, Beatriz,Fernández-Ibá?ez, M. ángeles
, p. 379 - 382 (2018)
An efficient catalytic system for the C–H olefination of arenes with different allylic substrates is reported. The catalytic system is based on Pd(OAc)2 and a readily accessible bidentate S,O-ligand. The methodology shows high activity with a wide range of arenes, including bulky and, electron-rich and -poor arenes. The applicability of this catalyst is demonstrated in the late-stage functionalization of the complex molecule O-methylestrone.
Reductive Coupling between C-N and C-O Electrophiles
He, Rong-De,Li, Chun-Ling,Pan, Qiu-Quan,Guo, Peng,Liu, Xue-Yuan,Shu, Xing-Zhong
supporting information, p. 12481 - 12486 (2019/09/04)
The cross-electrophile reaction is a promising strategy for C-C bond formation. Recent studies have focused mainly on reactions with organic halides. Here we report a coupling reaction between C-N and C-O electrophiles that demonstrates the possibility of constructing a C-C bond via C-N and C-O cleavage. Several reactions between benzyl/aryl ammonium salts and vinyl/aryl C-O electrophiles have been studied. Preliminary mechanistic studies revealed that the benzyl ammoniums were activated through a radical mechanism.
Unexpected formation of aryl ketones by palladium-catalyzed coupling of aryl bromides with vinylic acetates
Jean, Mickael,Renaulty, Jacques,Uriac, Philippe,Capet, Marc,Van De Weghe, Pierre
, p. 3623 - 3625 (2008/02/12)
A palladium-catalyzed coupling reaction of aryl bromides with vinylic acetates in the presence of tributyitin methoxide has been described. Unexpected formation of aryl ketones was obtained. Preliminary mechanistic studies indicated that the reaction proceeded by the addition of the aryl moiety in the coordination sphere of palladium to a ketene.
Thermal Decomposition of Pentacarbonyl(1-acyloxyalkylidene)chromium(0) Complexes: Formation of Z-Enol Esters
S?derberg, Bj?rn C.,Liu, Jian,Ball, Thomas W.,Turbeville, Michael J.
, p. 5945 - 5952 (2007/10/03)
Pentacarbonyl(1-acyloxyalkylidene)chromium(0) complexes, formed in situ by reaction of the corresponding tetramethylammonium pentacarbonyl(1-oxoalkyl)chromate(1-) salts with carboxylic acid halides, affords enol esters in moderate to good yields. In all cases examined, the Z-enol ester was obtained as the major or exclusive isomer. Addition of 1 equiv of pyridine to the reaction mixture substantially improved the Z/E ratio and, in most cases, increased the chemical yield.
