title: Benzyl 5-carboxy-4-ethyl-3-methylpyrrole-2-carboxylate.
abstract: In the title compound, C(16)H(17)NO(4), the benzyloxycarbonyl group is anti to the pyrrolic N atom. The molecules are joined into head-to-head dimers by hydrogen bonds involving the carboxylic acid groups. There is orientational disorder of these groups over two positions with approximately equal occupancy. A weaker hydrogen bond between the pyrrolic N atom and the carbonyl O atom of the benzyloxycarbonyl group joins the dimers into chains running parallel to the [110] direction.
authors.affiliation: CEMDRX, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, P-3000 Coimbra, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Ramos Silva
authors.forename: A
authors.initials: A
authors.lastname: Matos Beja
authors.forename: J A
authors.initials: JA
authors.lastname: Paixão
authors.forename: L
authors.initials: L
authors.lastname: Alte Da Veiga
authors.forename: A J
authors.initials: AJ
authors.lastname: Sobral
authors.forename: A M
authors.initials: AM
authors.lastname: Rocha Gonsalves
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D011392:Proline / Q000031:analogs & derivatives* / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry*
chemical_list: D011758:Pyrroles; C417517:benzyl 5-carboxy-4-ethyl-3-methylpyrrole-2-carboxylate; D011392:Proline