Convenient routes to 4, 4''-functionalized o-terphenyls and 2, 2'-functionalized biphenyls
G Hanson, DS Kemp
Index: Hanson, G.; Kemp, D. S. Journal of Organic Chemistry, 1981 , vol. 46, # 26 p. 5441 - 5443
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Citation Number: 38
Abstract
The dehydrogenation step proceeded satisfactorily only with sulfur fusion; palladium catalysts in our hands resulted in erratic and scale-dependent yields, and also formed the hydrogenolysis product of 3 as a byproduct that was difficult to remove. Subsequent functionalization of the dehydrogenation product followed routine paths. Demethylation with trimethylsilyl iodide gave 4; acetylation followed by bromination (NBS), and treatment with
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