Development of Zn-ProPhenol-Catalyzed Asymmetric Alkyne Addition: Synthesis of Chiral Propargylic Alcohols
作者:Barry M. Trost、Mark J. Bartlett、Andrew H. Weiss、Axel Jacobi von Wangelin、Vincent S. Chan
DOI:10.1002/chem.201202085
日期:2012.12.14
The development of a general and practical zinc‐catalyzed enantioselective alkyneaddition methodology is reported. The commercially available ProPhenol ligand (1) has facilitated the addition of a wide range of zinc alkynylides to aryl, aliphatic, and α,β‐unsaturated aldehydes in high yield and enantioselectivity. New insights into the mechanism of this reaction have resulted in a significant reduction
Catalytic enantioselective addition of terminal alkynes to aromatic aldehydes using zinc-hydroxyamide complexes
作者:Gonzalo Blay、Luz Cardona、Isabel Fernández、Alícia Marco-Aleixandre、M. Carmen Muñoz、José R. Pedro
DOI:10.1039/b911592g
日期:——
A mandelamide ligand, derived from (S)-mandelic acid and (S)-phenylethanamine, catalyzes the addition of aryl-, alkyl- and silyl-alkynylzinc reagents to aromatic and heteroaromatic aldehydes with good yields and good to high enantioselectivities.
A Straightforward Sequential Approach for the Enantioselective Synthesis of Optically Active α-Arylmethanol-1,2,3-Triazoles
作者:Floyd C. D. Andrade、Lucas V. B. L. Pugnal、Hugo L. I. Betim、Jéssica F. Vani、Julio Zukerman-Schpector、Ricardo S. Schwab
DOI:10.1002/ejoc.201800751
日期:2018.11.1
arylmethanols bearing 1,2,3‐triazoles are achieved using a sequential approach based on the enantioselective alkynylation of aldehydes followed by a one‐pot two‐step desilylation/CuAAC, providing the corresponding products with excellent yields and high enantioselectivity. The application of the reaction has been demonstrated in the synthesis of a 1,2,3‐triazole analog of antihistaminic and anticholinergic