Mechanistic Support for Intramolecular Migrative Cyclization of Propargyl Sulfones Provided by Catalytic Asymmetric Induction with a Chiral Counter Cation Strategy

2021 ◽  
Author(s):  
Ken-ichi Yamada
Keyword(s):  
Asymmetric Induction ◽  
Counter Cation ◽  
Catalytic Asymmetric

Synthetic explorations in the saframycin-ecteinascidin series: construction of major chiral subunits through catalytic asymmetric induction

2000 ◽  
Vol 41 (13) ◽  
pp. 2039-2042 ◽  
Author(s):  
Bishan Zhou ◽  
Scott Edmondson ◽  
Juan Padron ◽  
Samuel J Danishefsky
Keyword(s):  
Asymmetric Induction ◽  
Catalytic Asymmetric

ChemInform Abstract: CATALYTIC ASYMMETRIC INDUCTION IN OXIDATION REACTIONS. THE SYNTHESIS OF OPTICALLY ACTIVE EPOXIDES

1976 ◽  
Vol 7 (35) ◽  
pp. no-no
Author(s):  
R. HELDER ◽  
J. C. HUMMELEN ◽  
R. W. P. M. LAANE ◽  
J. S. WIERING ◽  
H. WYNBERG
Keyword(s):  
Optically Active ◽  
Asymmetric Induction ◽  
Oxidation Reactions ◽  
Catalytic Asymmetric

A model for metal-templated catalytic asymmetric induction via .pi.-allyl fragments

1985 ◽  
Vol 4 (6) ◽  
pp. 1143-1145 ◽  
Author(s):  
Barry M. Trost ◽  
Dennis J. Murphy
Keyword(s):  
Asymmetric Induction ◽  
Catalytic Asymmetric

Catalytic Asymmetric Aziridination of Benzhydryl Imines and Diazoacetate­ Esters with BOROX Catalysts from 3,3′-Disubstituted VANOL Ligands

Synthesis ◽  
2020 ◽  
Vol 52 (14) ◽  
pp. 2073-2091
Author(s):  
William D. Wulff ◽  
Yong Guan ◽  
Zhenjie Lu ◽  
Xiaopeng Yin ◽  
Aliakbar Mohammadlou ◽  
...  
Keyword(s):  
Asymmetric Induction ◽  
X Ray ◽  
First Report ◽  
Ethyl Diazoacetate ◽  
Asymmetric Aziridination ◽  
Catalytic Asymmetric

This work details the synthesis of 22 new chiral VANOL ligands that differ by the nature of the substituent in the 3- and 3′-positions of the ligand. These ligands were incorporated into boroxinate catalysts that were used to screen the catalytic asymmetric aziridination of benzhydryl imines with ethyl diazoacetate. Each catalyst was screened in the reaction of imines generated from benzaldehyde and cyclohexanecarboxaldehyde and some with 4-nitro- and 4-methoxybenzaldehyde. In addition, the first report of the effect of the ester substituent of the diazoacetate ester on the asymmetric induction in these aziridination reactions is presented. The first X-ray structure of a boroxinate catalyst generated from a VANOL-derived ligand is also reported.

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