Title of article
Reactions of dicarbanion equivalents generated from complexation of 1,3-dienes on Ti(II) moiety
Author/Authors
Baraut، نويسنده , , Johann and Perrier، نويسنده , , Arnaud and Comte، نويسنده , , Virginie and Richard، نويسنده , , Philippe and Le Gendre، نويسنده , , Pierre and Moïse، نويسنده , , Claude، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2006
Pages
4
From page
8319
To page
8322
Abstract
Conjugated dienes are able to react as 1,2- or 1,4-dicarbanions by coordination on Ti(II) moiety. These two possibilities are exemplified in this letter with isoprene, myrcene and several aldehydes to give 1,4- and 1,6-diols. When allowed to react with esters at room temperature, the titanium–diene complexes lead to cyclopentenol derivatives. Surprisingly, when this reaction is performed at lower temperature (−40 °C), allylic ketones are formed with high regio and diastereoselectivities.
Keywords
Titanium , Diene , Cyclopentenol , Allylic ketone , Diol
Journal title
Tetrahedron Letters
Serial Year
2006
Journal title
Tetrahedron Letters
Record number
1853281
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