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N-Methylnitrilium trifluoromethanesulphonate (triflate) salts, prepared from nitriles and methyl triflate, have been shown to be useful reagents for the synthesis of aromatic ketimines and ketones, amidinium, imidate, and thioimidate salts, benzimidazoles, benzoxazoles, benzothiazoles, quinazolinones, and 1,2,4-triazolinium salts.
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Booth et al. (1980) studied this question.
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