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Phosphorylation of alkyl‐2‐chloro‐2,3‐epoxyalkanoates with trialkyl phosphites: A novel approach to alkyl 2‐diethoxyphosphoryloxy‐2‐alkenoates

Phosphorylation of alkyl‐2‐chloro‐2,3‐epoxyalkanoates with trialkyl phosphites: A novel approach... Alkyl 2‐chloro‐2,3‐epoxyalkanoates react with trialkyl phosphites to give mixtures of (E) and (Z) alkyl 2‐diethoxyphosphoryloxy‐2‐alkenoates instead of the expected alkyl 2‐oxo‐3‐dialkoxyphosphorylalkanoates. Thermal isomerization of the alkyl 2‐chloro‐2,3‐epoxyalkanoates to alkyl 3‐chloro‐2‐oxoalkanoates and subsequent Perkow reaction of the latter with trialkyl phosphites yields the same products but usually in different (E) to (Z) ratios. A likely mechanism for the unexpected reaction is discussed. © 2000 John Wiley & Sons, Inc. Heteroatom Chem 11:115–119, 2000 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Heteroatom Chemistry Wiley

Phosphorylation of alkyl‐2‐chloro‐2,3‐epoxyalkanoates with trialkyl phosphites: A novel approach to alkyl 2‐diethoxyphosphoryloxy‐2‐alkenoates

Heteroatom Chemistry , Volume 11 (2) – Jan 1, 2000

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References (11)

Publisher
Wiley
Copyright
Copyright © 2000 John Wiley & Sons, Inc.
ISSN
1042-7163
eISSN
1098-1071
DOI
10.1002/(SICI)1098-1071(2000)11:2<115::AID-HC6>3.0.CO;2-6
Publisher site
See Article on Publisher Site

Abstract

Alkyl 2‐chloro‐2,3‐epoxyalkanoates react with trialkyl phosphites to give mixtures of (E) and (Z) alkyl 2‐diethoxyphosphoryloxy‐2‐alkenoates instead of the expected alkyl 2‐oxo‐3‐dialkoxyphosphorylalkanoates. Thermal isomerization of the alkyl 2‐chloro‐2,3‐epoxyalkanoates to alkyl 3‐chloro‐2‐oxoalkanoates and subsequent Perkow reaction of the latter with trialkyl phosphites yields the same products but usually in different (E) to (Z) ratios. A likely mechanism for the unexpected reaction is discussed. © 2000 John Wiley & Sons, Inc. Heteroatom Chem 11:115–119, 2000

Journal

Heteroatom ChemistryWiley

Published: Jan 1, 2000

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