Reaction of organoboranes with ethyl 4-bromocrotonate under the influence of potassium 2, 6-di-test-butylphenoxide. A convenient procedure for a four-carbon-atom …
HC Brown, H Nambu
Index: Brown,H.C.; Nambu,H. Journal of the American Chemical Society, 1970 , vol. 92, # 6 p. 1761 - 1763
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Citation Number: 7
Abstract
(5), shows only a doublet for HB. Moreover, the vicinal H-lg9Hg coupling constants in Table I1 correspond to the observed data for 3-exo-acetoxy-exo-norbornyl-mercuric chloride (93.2 Hz'O) and 5 (114 Hz). Consequently, in both 2 and 3 the addition must be cis-exo, with the minor modification in the spectrum of the H3 proton apparently arising from some as yet unknown effect of the 7, 7-dimethyl substituents. The lifetime of such 1, 2-addition ...
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