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Competitive kinetics of 1,2-carbon and hydride shifts in cyclobutylchlorocarbene

✍ Scribed by Robert A. Moss; Ho Guo-Jie

Publisher: Elsevier Science
Year: 1990
Tongue: French
Weight: 233 KB
Volume: 31
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)88771-7

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✦ Synopsis

Cyclobutylchlorocarbene undergoes competitive 1,2-carbon and 1,2-hydride intramoleular rearrangements with (approximate) absolute rate constants of 4.6 x 107 and 2.1 x 10' s-l, respectively, at 21'C. Attention is currently focused on the kinetics of intramolecular carbene rearrangements. Laser flash photolytic (LFP) measurements have led to rate constants and activation parameters for the 1,2-hydride shifts of benxylhalocarbenes,l,s methylchlorocarbene,3*k and other alkylchlorocarbenes.3,sa Less, however, is known about

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