scholarly journals A Highly Stereoselective Synthesis of (E)-Enol Lactones by the Wittig Reaction of Cyclic Anhydrides with (α-Alkoxycarbonylethylidene)triphenylphosphorane

1987 ◽  
Vol 60 (2) ◽  
pp. 689-696 ◽  
Author(s):  
Sadao Tsuboi ◽  
Hirohumi Fukumoto ◽  
Hiroshi Wada ◽  
Akira Takeda ◽  
Keiichi Fukuyama
Keyword(s):  
Wittig Reaction ◽  
Stereoselective Synthesis ◽  
Cyclic Anhydrides

scholarly journals Stereoselective Synthesis of Tetraalkyl Cyclobutene-1,2,3,4-tetracarboxylates. Synthesis of Tetraalkyl (Z,Z)-Buta-1,3-diene-1,2,3,4-tetracarboxylates

1999 ◽  
Vol 23 (8) ◽  
pp. 512-513
Author(s):  
Issa Yavari ◽  
Farahnaz Nourmohammadian
Keyword(s):  
Ring Opening ◽  
Wittig Reaction ◽  
Stereoselective Synthesis ◽  
Intramolecular Wittig Reaction ◽  
Ring Opening Reactions ◽  
Boiling Toluene

Tetraalkyl cyclobutene-1,2,3,4-tetracarboxylates, prepared by intramolecular Wittig reaction between a vinylphosphonium salt and diethyl 2-oxobutanedioate, undergo electrocyclic ring-opening reactions, in boiling toluene, to produce highly electron-deficient 1,3-dienes.

ChemInform Abstract: Stereoselective Synthesis of Racemic and Optically Active E-Vinyl and E-Dienyl Sulfoxides via Wittig Reaction of α-Sulfinyl Phosphonium Ylides.

ChemInform ◽  
2010 ◽  
Vol 30 (22) ◽  
pp. no-no
Author(s):  
Marian Mikolajczyk ◽  
Wieslawa Perlikowska ◽  
Jan Omelanczuk ◽  
Henri-Jean Cristau ◽  
Anne Perraud-Darcy
Keyword(s):  
Wittig Reaction ◽  
Stereoselective Synthesis ◽  
Optically Active

Stereoselective Synthesis of (E)-Vinyl Sulfoxides by the Horner−Wittig Reaction

2000 ◽  
Vol 2000 (15) ◽  
pp. 2787-2793 ◽  
Author(s):  
Jan  Hein van Steenis ◽  
Joseph  Johannes  Gerardus  Steven van Es ◽  
Arne van der Gen
Keyword(s):  
Wittig Reaction ◽  
Stereoselective Synthesis

Mechanism of Wittig reaction with cyclic anhydrides

1992 ◽  
Vol 70 (7) ◽  
pp. 1985-1996 ◽  
Author(s):  
Margaret M. Kayser ◽  
Krista L. Hatt ◽  
Donald L. Hooper
Keyword(s):  
Wittig Reaction ◽  
Reaction Pathway ◽  
Spectroscopic Methods ◽  
Cyclic Anhydrides

The reactions of stabilized phosphoranes with cyclic anhydrides give enol-lactones as final products. The initial condensation, however, leads to the formation of acyclic adducts that are observable by NMR, can be easily trapped, and, in some cases, can be isolated. A study of the mechanism of these condensations by NMR spectroscopic methods and by various trapping experiments is described and the reaction pathway is proposed.

scholarly journals Stereoselective Synthesis of Trisubstituted Alkenylboron Reagents by Boron-Wittig Reaction of Ketones

2019 ◽  
Vol 21 (11) ◽  
pp. 4392-4394 ◽  
Author(s):  
Sheila Namirembe ◽  
Chenpeng Gao ◽  
Ryan P. Wexler ◽  
James P. Morken
Keyword(s):  
Wittig Reaction ◽  
Stereoselective Synthesis
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