Cycloadditionen mit dipolaren Zwischenstufen, II. Dipolare Produkte aus Allencarbonsäureestern
- 21 September 1979
- journal article
- research article
- Published by Wiley in European Journal of Organic Chemistry
- Vol. 1979 (9) , 1406-1425
- https://doi.org/10.1002/jlac.197919790914
Abstract
Cycloadditions with Dipolar Intermediates, II. ‐ Dipolar Products from AllenecarboxylatesThe allenecarboxylates 2c‐c, and in some cases also the allenetri‐ and allenedicarboxylates 2d and 2e, f react with phosphanes, pyridines, and nucleophilic carbenes or their precursors to give the dipolar 1:1 adducts 10, 11 and 16,18, 20, respectively. These “carbene allene dipoles” represent stable derivatives of trimethylenemethane.Keywords
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