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(Methoxycarbonylmethylene)triphenylphosphorane is used in olefination reactions. Further, it undergoes the Wittig reaction with aldehydes to give substituted methyl acrylates. It is used in the preparation of (triphenylphosphoranylidene)-ketene.
Stable ylide which undergoes the Wittig reaction with aldehydes to give substituted methyl acrylates. See also (Ethoxycarbonylmethylene)triphenylphosphorane, A12896 and Appendix 1. For a detailed study of the reaction with benzaldehyde, see J. Org. Chem., 59, 1126 (1994). For use of high pressure to increase the yield and trans-selectivity of reaction with aromatic aldehydes, see: Liebigs Ann. Chem., 2135 (1983).
For tandem Wittig reaction and Cope rearrangement, see: J. Chem. Soc., Chem. Commun., 381 (1995):
Strong base, for example Na bis(TMS)amide, brings about elimination of methanol, giving ketenylidenetriphenylphosphorane, which reacts with ɑ-hydroxy-ketones, e.g. in the steroid series, to give butenolides, by acylation and Wittig cyclization: Chem. Ber., 113, 2038 (1980):
Review of phosphacumulene ylides: Angew. Chem. Int. Ed., 16, 349 (1977).
Dierkes, G.; Bongartz, A.; Guth, H.; Hayen, H. Quality Evaluation of Olive Oil by Statistical Analysis of Multicomponent Stable Isotope Dilution Assay Data of Aroma Active Compounds. J. Agric. Food Chem., 2012, 60 (1), 394-401.
Mears, P. R.; Thomas, E. J. Difluoroallylation using a 2-bromomethyl-1,1-difluoroalk-1-ene. Tetrahedron Lett. 2015, 56 (26), 3980-3981.