Darstellung von 1,1-Diphenylethanole durch Addition von Organotitan-Verbindungen an substituierte Aceto- und Benzophenone
- 1 January 1991
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1991 (03) , 228-232
- https://doi.org/10.1055/s-1991-26429
Abstract
Preparation of 1,1-Diphenylethanols by Addition of Organotitanium Compounds to Substituted Aceto- and Benzophenones The 1,1-diphenylethanols 5a-h were prepared by the addition of phenyltitanium triisopropoxide (3) to 4-substituted acetophenones 1a-h. The titanium tetraalkoxide 7, formed in situ from 3 and 1a, forms complexes with up to two molecules of 1a, this was established by 13C-NMR. Preparation of the alcohols 5a-f was also carried out by the reaction of methyltitanium triisopropoxide (4) with 4-substituted benzophenones 2a-f.Keywords
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