The reaction of 1-(2-isocyanophenyl)pyrroles (1),which were readily prepared from commercially available or known 1-92-aminophenyl)pyrroles by formylation in refluxing ethyl formate followed by dehydration with POCl_3/Et_3N in THF,with Eschenmoser's salt (2) proceeded smoothyl at room temperature to give the dimethyl)pyrrolo1,2-aquinoxalin-4-ylmehtyl)ammonium iodides (3) in good yields (74-75). 1-(2-Isocyanophenyl)pyrrole (1a) was also found to react with a range of iminium salts (5) and (7),derived fro secondary amines and aldehydes in the presence of Me_3SiCl/NaI/Et_3N,to give 4-(1-dialkylaminoalkyl)pyrrolo1,2-aquinoxaline derivatives (6),(8),and (9) in isolated yields ranging from 47 to 99.
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