72952-72-8Relevant academic research and scientific papers
A highly efficient and practical preparation of 2,4-pentadienyltitaniums and their γ-selective addition reaction with aldehydes and ketones
Okamoto, Sentaro,Sato, Fumie
, p. 151 - 156 (2001)
A variety of penta-2,4-dienyltitanium complexes including those having a functional group were readily prepared from a divalent titanium reagent, Ti(O-i-Pr)4/2i-PrMgCl, and penta-1,4-dien-3-ol or penta-2,4-dien-1-ol derivatives, and the organotitaniums thus prepared reacted with aldehydes and ketones smoothly to afford the corresponding penta-1,4-dien-3-yl carbinols highly predominantly in excellent yield.
(2,4-Pentadienyl)trimethylsilane: A Useful Pentadienylation Reagent
Seyferth, Dietmar,Pornet, Jacques
, p. 1721 - 1722 (2007/10/02)
Pentadienyllithium reacts with trimethylchlorosilane to give (2,4-pentadienyl)trimethylsilane, Me3SiCH2CH=CHCH=CH2, as the exclusive product.This silane reacts with aliphatic and aromatic aldehydes and ketones in the presence of TiCl4 in dichloromethane at -40 deg C to give, after hydrolytic workup, exclusively products of the type RR'C(OH)CH2=CHCH=CH2 in good yield.With α,β-unsaturated carbonyl compounds a TiCl4-induced Diels-Alder reaction of the dienylsilane interferes.
