ChemInform Abstract: The Asymmetric Synthesis of β-Lactams. Stereocontrolled Asymmetric Tandem Michael Additions and Alkylations of α,β-Unsaturated Acyl Ligands Bound to the Chiral Auxiliary [η5-C5H5)Fe(CO)(PPh3)].

1986 ◽  
Vol 17 (50) ◽  
Author(s):  
S. G. DAVIES ◽  
I. M. DORDOR-HEDGECOCK ◽  
K. H. SUTTON ◽  
J. C. WALKER
Keyword(s):  
Asymmetric Synthesis ◽  
Chiral Auxiliary ◽  
Michael Additions ◽  
Unsaturated Acyl

Indium Bromide-catalyzed Unprecedented Hydrogenolysis: A Novel One-Pot Synthesis of Per-O-Acetylated β-carboxymethyl O and S-glycosides

2020 ◽  
Vol 24 (8) ◽  
pp. 900-908
Author(s):  
Ram Naresh Yadav ◽  
Amrendra K Singh ◽  
Bimal Banik
Keyword(s):  
Asymmetric Synthesis ◽  
Chiral Auxiliary ◽  
Bioactive Molecules ◽  
One Pot ◽  
Enantiomerically Pure ◽  
Stereoselective Glycosylation ◽  
One Pot Synthesis ◽  
Wide Range

Numerous O (oxa)- and S (thia)-glycosyl esters and their analogous glycosyl acids have been accomplished through stereoselective glycosylation of various peracetylated bromo sugar with benzyl glycolate using InBr3 as a glycosyl promotor followed by in situ hydrogenolysis of resulting glycosyl ester. A tandem glycosylating and hydrogenolytic activity of InBr3 has been successfully investigated in a one-pot procedure. The resulting synthetically valuable and virtually unexplored class of β-CMGL (glycosyl acids) could serve as an excellent potential chiral auxiliary in the asymmetric synthesis of a wide range of enantiomerically pure medicinally prevalent β-lactams and other bioactive molecules of diverse medicinal interest.

scholarly journals α,β-Unsaturated acyl ammonium species as reactive intermediates in organocatalysis: an update

2020 ◽  
Author(s):  
Jacqueline Bitai ◽  
Matthew Westwood ◽  
Andrew D Smith
Keyword(s):  
Reactive Intermediates ◽  
Domino Reactions ◽  
Michael Additions ◽  
Unsaturated Acyl

α,β-Unsaturated acyl ammonium species are versatile intermediates that have been applied in a variety of transformation including Michael additions, domino reactions and cycloadditions. Many of these transformations are promoted by...

Asymmetric Synthesis of Iridoid Derivatives Using Resolved 2-Phenylindoline as a Chiral Auxiliary

2008 ◽  
Vol 2008 (35) ◽  
pp. 5915-5921 ◽  
Author(s):  
Ellen M. Santangelo ◽  
Ilme Liblikas ◽  
Anoma Mudalige ◽  
Karl W. Törnroos ◽  
Per-Ola Norrby ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Chiral Auxiliary

ChemInform Abstract: Synthesis and Stereoselective Reactions of α,β-Unsaturated Acyl Ligands Bound to the Chiral Auxiliary ((η5-C5H5)Fe(CO)(PPh3)): A Review

ChemInform ◽  
1988 ◽  
Vol 19 (1) ◽  
Author(s):  
S. G. DAVIES ◽  
I. M. DORDOR-HEDGECOCK ◽  
R. J. C. EASTON ◽  
S. C. PRESTON ◽  
K. H. SUTTON ◽  
...  
Keyword(s):  
Chiral Auxiliary ◽  
Unsaturated Acyl ◽  
Stereoselective Reactions

scholarly journals Asymmetric synthesis of the C1–C6 portion of the psymberin using an Evans chiral auxiliary

2013 ◽  
Vol 54 (41) ◽  
pp. 5555-5557 ◽  
Author(s):  
Ashutosh Pal ◽  
Zhenghong Peng ◽  
Paul T. Schuber ◽  
Basvoju A. Bhanu Prasad ◽  
William G. Bornmann
Keyword(s):  
Asymmetric Synthesis ◽  
Chiral Auxiliary
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