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Solvent-controlled additions of organotitanium reagents to olefinic double bonds

✍ Scribed by Etienne Moret; Manfred Schlosser

Publisher
Elsevier Science
Year
1985
Tongue
French
Weight
216 KB
Volume
26
Category
Article
ISSN
0040-4039

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✦ Synopsis

Under carefully chosen working conditions (solvent, temperature), methyltitanium reagents smoothly convert homoallyl alcohols having a terminal double-bond into (El-3-penten-1-01s whereas non-terminal a-alken-1-01s afford I-methyl-branched derivatives with configurational inversion of the chain (2 + E; E + Z), stereoselectivities being better than 99%.

Recently we have disclosed a procedure for the titanium-mediated methylation of homoallyl alco-This work was supported by the Schweizerische Nationalfonds zur Forderung der wissenschaftlichen Forschung, Bern (grant nr. 2.635-0.82).

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