Synthesis p. 681 - 682 (1994)
Update date:2022-08-30
Topics:
Cliff
Pyne
The palladium(0) catalysed coupling reaction of 4-iodo-1-triphenylmethylimidazole (7) or its 2-methyl analogue 8 afforded the 4,4'-biimidazoles 9 and 10, respectively. Treatment of these compounds with 60% aqueous trifluoroacetic acid gave 4,4'-biimidazole and 2,2'-dimethyl-4,4'-biimidazole as their bistrifluoroacetate salts 11 and 12, respectively.
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