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Sterically hindered internal rotation in acyclic hydrocarbons: Tetraisopropylethylene

✍ Scribed by David S. Bomse; Thomas Hellman Morton

Publisher: Elsevier Science
Year: 1975
Tongue: French
Weight: 216 KB
Volume: 16
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)71982-4

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✦ Synopsis

In continuation of our studies of sterically crowded, acyclic hydrocarbons with hindered rotation about carbon-carbon single bondsI, we have prepared tetraisopropylethylene, BL, and its tetradeuterio 2 analogue, lb, by the reductive coupling reaction of McMurry and Fleming, reaction 1. Compound&, which is sublimed out of the reaction mixture at 130°C under a steady stream of nitrogen, is obtained from 2,4-dimethyl-3-pentanone in 12qbyield: colorless needles, mp 125-125.5'C, ir (KBr pellet) 3050,

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