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Ketene acetal monomers: Synthesis and characterization by J. V. Crivello; R. Malik; Y.-L. Lai is a Materials Science article available to read on EtoBox.

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## SYNOPSIS A new, facile, and high-yield synthesis of ketene acetals derived from readily available and inexpensive starting materials has been developed. For example, an a,@-unsaturated aldehyde can be condensed with an alkane diol to afford a 2-vinyl substituted cyclic acetal. This latter compound can be converted to the desired cyclic ketene acetal by isomerization of the double bond in the presence of tris(triphenylphosphine)ruthenium(II) dichloride. Good to excellent yields of cyclic ketene acetals were obtained employing this method. The novel monomers were fully characterized by IR, NMR, and by elemental analysis. 0 1996 John Wiley & Sons, Inc. Keywords: ketene acetals cyclic ketene acetals isomerization tris(tripheny1-ph0sphine)ruthenium (11) dichloride INTRODUCTION ' Ketene acetals (A) are a well-known class of compounds having the general structure shown below. Due to the strong electron-releasing effects of the two alkoxy groups, ketene acetals display a pronounced dipolar character that confer on these compounds great reactivity towards electrophiles, nucleophiles, and free radicals.2 Schildknecht3 reported that of ketene acetals are more reactive than the related viny

Who reads Ketene acetal monomers: Synthesis and characterization?

Author

J. V. Crivello; R. Malik; Y.-L. Lai

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

1996

Language

EN

Field

Materials Science (Physical Sciences)