Electronic and steric tuning of chiral diene ligands for rhodium-catalyzed asymmetric arylation of imines
作者:Kazuhiro Okamoto、Tamio Hayashi、Viresh H. Rawal
DOI:10.1039/b904624k
日期:——
Rhodium-catalyzedasymmetricarylation of imines using electronically and sterically-modified chiral diene ligands gave the corresponding diarylmethylamines in high yield and with high enantioselectivity using just 0.3 mol% of catalyst.
Gold Meets Rhodium: Tandem One-Pot Synthesis of β-Disubstituted Ketones via Meyer–Schuster Rearrangement and Asymmetric 1,4-Addition
作者:Max M. Hansmann、A. Stephen K. Hashmi、Mark Lautens
DOI:10.1021/ol4011739
日期:2013.7.5
An asymmetric one-pot tandem Au/Rh-catalyzed synthesis of highly enantioenriched β-disubstituted ketones starting from racemic propargyl alcohols is disclosed. The compatibility of the two metal complexes (Au/Rh) and their orthogonal ligand systems (NHC/diene) in this bimetallic catalytic system is investigated.
Enantioselective Rhodium-Catalyzed Coupling of Arylboronic Acids, 1,3-Enynes, and Imines by Alkenyl-to-Allyl 1,4-Rhodium(I) Migration
作者:Michael Callingham、Benjamin M. Partridge、William Lewis、Hon Wai Lam
DOI:10.1002/anie.201709334
日期:2017.12.18
A chiral rhodiumcomplexcatalyzes the highlyenantioselective coupling of arylboronic acids, 1,3-enynes, and imines to give homoallylic sulfamates. The key step is the generation of allylrhodium(I) species by alkenyl-to-allyl 1,4-rhodium(I) migration. tAm=tert-amyl.
手性铑配合物催化芳基硼酸,1,3-烯炔和亚胺的高度对映选择性偶联,得到均烯丙基氨基磺酸盐。关键步骤是通过烯基至烯丙基1,4-铑(I)的迁移生成烯丙基铑(I)。t Am =叔戊基。
A second-generation ligand for the enantioselective rhodium-catalyzed addition of arylboronic acids to alkenylazaarenes
作者:Iain D. Roy、Alan R. Burns、Graham Pattison、Boris Michel、Alexandra J. Parker、Hon Wai Lam
DOI:10.1039/c4cc00340c
日期:——
A 2,4,6-trialkylanilide-containing chiral diene has been identified as a superior ligand for the enantioselectiverhodium-catalyzed arylation of alkenylazaarenes with arylboronicacids.