title: Abnormally mild synthesis of bis(dithiolo)pyrroles from 2,5-dimethylpyrroles.
abstract: [chemical reaction: see text]. Treatment of N-substituted 2,5-dimethylpyrroles 2 with an equilibrated mixture of disulfur dichloride and DABCO in chloroform at 0 degrees C gives pentathiepinopyrroles 3 in moderate yields; further reaction of 3 with the same mixture at room temperature leads, in an extensive reaction cascade, to bis(dithiolo)pyrroles 4 in high yield; 2 can be converted into 4 in a one-pot operation under unusually mild conditions.
authors.affiliation: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect, 47, 119991 Moscow, Russia.
authors.forename: Stanislav A
authors.initials: SA
authors.lastname: Amelichev
authors.forename: Rinat R
authors.initials: RR
authors.lastname: Aysin
authors.forename: Lidia S
authors.initials: LS
authors.lastname: Konstantinova
authors.forename: Natalia V
authors.initials: NV
authors.lastname: Obruchnikova
authors.forename: Oleg A
authors.initials: OA
authors.lastname: Rakitin
authors.forename: Charles W
authors.initials: CW
authors.lastname: Rees