Attempts to polylithiate tetrabromoarenes. The compatibility of methyl sulfate and butyllithium

GC Nwokogu, H Hart

Index: Nwokogu, Godson C.; Hart, Harold Tetrahedron Letters, 1983 , vol. 24, # 51 p. 5725 - 5726

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Citation Number: 7

Abstract

Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Tetrabromo- - and -dichlorobenzenes are only dilithiated, even with excess -butyllithium, although more than two bromines are replaced by methyl groups when such solutions are treated with methyl sulfate. ... For : mp 215–217°C; 1 H NMR (CCl 4 ) δ 2.43 (s, 6 H), 2.55 (s, 3 H); ...