Enantioselective synthesis of butadien-2-ylcarbinols via (silylmethyl)allenic alcohols from chromium-catalyzed additions to aldehydes utilizing chiral carbazole ligands
The synthesis of chiral, nonracemic butadienylcarbinols by employing intermediate (trimethylsilyl)methylallenic alcohols is described. Allenic alcohols are obtained by treatment of aldehydes with (4-bromobut-2-ynyl) trimethylsilane in the presence of a ca
Durán-Galván, María,Worlikar, Shilpa A.,Connell, Brian T.
scheme or table
p. 7707 - 7719
(2010/10/21)
New preparation of tridentate bis-oxazoline carbazole ligand effective for enantioselective nozaki-hiyama reaction
A new preparation of the tridentate bis-oxazoline carbazole ligand 1 is described. This method features direct formation of the amide, which is a precursor of the ligand l, via the Pd-catalyzed amidation and following BF3 · OEt2 medi
Inoue, Masahiro,Nakada, Masahisa
p. 133 - 138
(2008/02/13)
Asymmetric catalysis of Nozaki-Hiyama allylation and methallylation with a new tridentate bis(oxazolinyl)carbazole ligand
This work describes the development of a new tridentate ligand effective for the asymmetric catalysis of Nozaki-Hiyama allylation and methallylation. Various aldehydes were allylated or methallylated with good enantioselectivity (86-96%), and a key interm
Inoue, Masahiro,Suzuki, Takahiro,Nakada, Masahisa
p. 1140 - 1141
(2007/10/03)
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