Reaction of acyl isocyanates with disubstituted amides
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The dimethyl amides of theα-, β-, andγ-pyridinecarboxylic acids causes the dimerization of benzoyl isocyanate.
Trichloroacetyl isocyanate when reacted with N,N-dimethylisonicotinamide and N,N-dimethylpicolinamide gives saltlike adducts, and when reacted with N,N-dimethylnicotinamide it gives the cycloadduct with the intermediately formed acylamidine.
Trifluoroacetyl isocyanate reacts with N,N-dimethylpicolinamide to give the acylamidine, while with theβ andγ isomers it gives a mixture of acylamidines and saltlike adducts.
KeywordsAmide Adduct Dimethyl Isocyanate Benzoyl
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