Abstract
The reaction of 1,1-diphenylethylene with AlCl3 in CH2Cl2 at low temperature in the presence of small amounts of water (present as residual impurity or deliberately added) occurs in two successive stages: a very rapid reaction cocatalysed by water and a slower one resulting from a direct (bimolecular) initiation. The stoichiometry of the reaction involving water has been determined: 3 H2O and 6 AlCl3, are necessary to form 4 carbocations.
In the same conditions, hydrogen chloride has no influence either on the extent of the first stage or on the yield and the rate of the second stage.
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Masure, M., Sauvet, G. & Sigwalt, P. Effects of water and hydrogen chloride on the reaction of 1,1-diphenylethylene with AlCl3 . Polymer Bulletin 2, 699–705 (1980). https://doi.org/10.1007/BF00254455
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DOI: https://doi.org/10.1007/BF00254455