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Intramolecular [2 + 2] cycloaddition reactions of vinylketenes. stereo- and regiospecific preparation of vinylketenes from α,β-unsaturated acid chlorides.

✍ Scribed by Yashwant S. Kulkarni; Beverly W. Burbaum; Barry B. Snider

Book ID: 104233344
Publisher: Elsevier Science
Year: 1985
Tongue: French
Weight: 270 KB
Volume: 26
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)80902-3

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✦ Synopsis

Treatment of a,P-unsaturated acid chlorides 5, 6, 14, 17, and 18 with NEt3 in toluene at reflux generates, stereo-and regiospecifically, the vinylketene which undergoes a facile intramolecular [2 + 21 cycloaddition.

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