881889-76-5Relevant academic research and scientific papers
Chiral N-heterocyclic carbene-copper(I)-catalyzed asymmetric allylic arylation of aliphatic allylic bromides: Steric and electronic effects on γ-selectivity
Selim, Khalid B.,Nakanishi, Hirotsugu,Matsumoto, Yasumasa,Yamamoto, Yasutomo,Yamada, Ken-Ichi,Tomioka, Kiyoshi
experimental part, p. 1398 - 1408 (2011/04/25)
Chiral N-heterocyclic carbene ligands were electronically and sterically tuned to improve γ-selectivity in copper(I)-catalyzed asymmetric allylic arylation of aliphatic allylic bromides with several aryl Grignard reagents. High γ-selectivity was realized
Copper-catalyzed asymmetric allylic substitution of allyl phosphates with aryl- and alkenylboronates
Shintani, Ryo,Takatsu, Keishi,Takeda, Momotaro,Hayashi, Tamio
supporting information; experimental part, p. 8656 - 8659 (2011/11/06)
The asymmetric allylic substitution of allyl phosphates with aryl- and alkenylboronates catalyzed by a copper/N-heterocyclic carbene complex was developed and the substitution products were obtained with high enantioselectivity (see scheme). To account for the observed influence of the reaction parameters a possible catalytic cycle for this process was proposed. Copyright
Copper-free asymmetric allylic alkylation with grignard reagents
Jackowski, Olivier,Alexakis, Alexandre
supporting information; experimental part, p. 3346 - 3350 (2010/07/15)
(Chemical Equation Presented) Open wide and say AAA: The copper-free asymmetric allylic alkylation reaction of Crignard reagents, catalyzed by N-heter-ocyclic carbenes, is reported for allyl bromide derivatives. This reaction offers good enantioselectivit
Stereoselective synthesis of chiral 3-aryl-1-alkynes from bromoallenes and heterocuprates
Caporusso, Anna Maria,Zampieri, Alessia,Aronica, Laura Antonella,Banti, Donatella
, p. 1902 - 1910 (2007/10/03)
The synthesis of chiral 3-aryl-1-alkynes 3 via cross-coupling of 3-alkyl- and 3,3-dialkyl-1-bromo-1,2-dienes 1 and arylbromocuprates (RCuBr)MgBr-LiBr 2 was examined. With phenylcopper reagents and its para-substituted derivatives, as well as with 2-naphth
