Hindered rotation in 1,2-dineopentyltetr
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D.T. Dix; G. Fraenkel; H.A. Karnes; M.S. Newman
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Article
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1966
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Elsevier Science
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French
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1,2\_Dineopentyltetramethylbenzene, I, is an extremely crowded mole-1 cule. We have found that the rate of rotation about the CA,-C& bonds is sufficiently slow to be measured by the methods of n.m.r. spectroscopy 233 . This is the first example of hindered rotatipn of alQ1 groups attached to a singl