In the isomeric compounds 2-benzyl-3-methyl-1-phenylbenzo[b]furo[2,3-c]pyrr
ole and 2-benzyl-1-methyl-3-phenyl-benzo[b]furo[2.3-c]pyrrole, both C24H19N
O, the pyrrole ring. although presumably somewhat strained, does not differ
appreciably from N-methylpyrrole except for a relatively short C-C single
bond in the pyrrole ring.