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0344990539
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Aryl nonaflates are prepared with perfluoro-1-butanesulfonyl fluoride (Aldrich Chem. Co.), which is comparable in price to triflic anhydride (Aldrich Chem. Co.).
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0033531985
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0344127940
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4 as the base led preferentially to amination at bromine along with the diamination products. No reaction was observed with -hexylamine.
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51
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0344559479
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note
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DPEphos = bis[2-(diphenylphosphino)phenyl] ether; dppf= 1,1′bis(diphenylphosphino)ferrocene.
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52
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0345421622
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This is the same behavior observed with the corresponding aryl triflate (see ref 2e).
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53
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0344559480
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note
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4 as base did not proceed beyond 65% conversion.
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54
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0344127939
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note
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Cleavage of the nonaflate was observed in the presence of amine and alkoxide in the absence of Pd. This side reaction had also been observed with the corresponding triflates (see ref 2f).
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55
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0345030827
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In these reactions only trace amounts of phenol or diamination products were detected by GC analysis.
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