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C→N Migrations of the ethoxycarbonyl group in reactions ofortho-substituted aryl isocyanates with the 1,3-zwitterion derived from triisopropylphosphine and ethyl 2-cyanoacrylate

✍ Scribed by Yu. G. Gololobov; P. V. Petrovskii; E. M. Ivanova; O. A. Linchenko; R. Schmutzler; L. Ernst; P. G. Jones; A. Karaçar; M. Freytag; S. Okucu

Book ID
110437200
Publisher
Springer
Year
2003
Tongue
English
Weight
405 KB
Volume
52
Category
Article
ISSN
1573-9171

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Reversible C ⇆ N migration of the ethoxy
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## Abstract Pyridinium and isoquinolinium ylides (**__7__** and **__12__**) derived from malonic ester react in an unusual manner with isocyanates giving the new pyridinium ylide (**__9__**) and the new isoquinolinium ylide (**__14__**). __C__ → __N__ Migration of the COOEt group takes place at roo

Kinetics and mechanism of the unusual in
Kinetics and mechanism of the unusual insertion reactions of aryl isocyanates into the CC bond of the phosphonium zwitter-ion derived by the reaction of triisopropylphosphine with ethyl 2-cyanoacrylate
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The kinetics of the reactions of aryl isocyanates with the zwitterion formed by the addition of triisopropylphosphine to ethyl 2-cyanoacrylate in acetonitrile solution have been determined by a spectrophotometric method. It was established that the reaction is second order overall, first order with