title: 6-Bromo-1-(1,2-propadien-yl)-3-(2-propyn-yl)-1H-imidazo[4,5-b]pyridin-2(3H)-one.
abstract: The reaction of propargyl bromide and 6-bromo-1,3-dihydro-imidazo[4,5-b]pyridin-2-one in refluxing dimethyl-formamide yields the title compound, C(12)H(8)BrN(3)O, which features nitro-gen-bound propadienyl and propynyl substituents. The imidazolopyridine fused ring is planar (r.m.s. deviation = 0.012 Å); the propadienyl chain is coplanar with the fused ring as it is conjugated with it, whereas the propynyl chain is not as the nitro-gen-bound C atom is a methyl-ene linkage. The acetyl-enic H atom is hydrogen bonded to the carbonyl O atom of an adjacent mol-ecule, forming a helical chain runnning along the b axis.
authors.forename: S
authors.initials: S
authors.lastname: Dahmani
authors.forename: A
authors.initials: A
authors.lastname: Haoudi
authors.forename: F
authors.initials: F
authors.lastname: Capet
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng