scholarly journals Deracemizing α‐Branched Carboxylic Acids by Catalytic Asymmetric Protonation of Bis‐Silyl Ketene Acetals with Water or Methanol

2019 ◽  
Vol 58 (33) ◽  
pp. 11479-11482 ◽  
Author(s):  
Francesca Mandrelli ◽  
Aurélie Blond ◽  
Thomas James ◽  
Hyejin Kim ◽  
Benjamin List
Keyword(s):  
Carboxylic Acids ◽  
Ketene Acetals ◽  
Silyl Ketene Acetals ◽  
Catalytic Asymmetric

scholarly journals The Catalytic Asymmetric Mukaiyama-Michael Reaction of Silyl Ketene Acetals with α,β-Unsaturated Methyl Esters

2018 ◽  
Vol 57 (9) ◽  
pp. 2464-2468 ◽  
Author(s):  
Tim Gatzenmeier ◽  
Philip S. J. Kaib ◽  
Julia B. Lingnau ◽  
Richard Goddard ◽  
Benjamin List
Keyword(s):  
Michael Reaction ◽  
Methyl Esters ◽  
Ketene Acetals ◽  
Silyl Ketene Acetals ◽  
Catalytic Asymmetric

The generation of C-glycosides through the enolate Claisen rearrangement

1979 ◽  
Vol 57 (13) ◽  
pp. 1743-1745 ◽  
Author(s):  
Robert E. Ireland ◽  
Craig S. Wilcox ◽  
Suvit Thaisrivongs ◽  
Noel R. Vanier
Keyword(s):  
Carboxylic Acids ◽  
Claisen Rearrangement ◽  
Sigmatropic Rearrangements ◽  
Unsaturated Carboxylic Acids ◽  
Aliphatic Esters ◽  
Ketene Acetals ◽  
Silyl Ketene Acetals

The [3,3]-sigmatropic rearrangements of silyl ketene acetals obtained from aliphatic esters of furanoid and pyranoid glycals is described. The heterocyclic γ,δ-unsaturated carboxylic acids II are produced in good yields. A new preparation of furanoid and pyranoid glycals is described.

Lewis Base Activation of Lewis Acids. Addition of Silyl Ketene Acetals to Aldehydes

2002 ◽  
Vol 124 (45) ◽  
pp. 13405-13407 ◽  
Author(s):  
Scott E. Denmark ◽  
Thomas Wynn ◽  
Gregory L. Beutner
Keyword(s):  
Lewis Acids ◽  
Lewis Base ◽  
Ketene Acetals ◽  
Silyl Ketene Acetals
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