245-57-8Relevant academic research and scientific papers
Cyclocondensation of n-(prop-2-yn-1-yl)- and n-(penta-2,4-diyn-1-yl)- o-phenylenediamines with phenyl isothiocyanate and carbon disulfide
Novikov,Danilkina,Balova
scheme or table, p. 758 - 766 (2012/01/16)
The cyclocondensation of N-(prop-2-yn-1-yl)-o-phenylenediamines with phenyl isothiocyanate leads to the formation of 1-(prop-2-yn-1-yl)-1,3-dihydro-2H- benzimidazole-2-thiones irrespective of the substituent nature at the triple bond. Reactions of both mo
Heterocyclizations of 2-allylthiobenzimidazoles under the action of bromine
Korotkikh,Raenko,Aslanov
, p. 610 - 618 (2007/10/03)
Heterocyclizations of 2-allylthiobenzimidazoles under the action of bromine yield 3-bromo-3,4-dihydro-2H-benzimidazo[2,1-b][1,3]thiazine and 2H- or 4H-benzimidazo[2,1-b][1,3]thiazines via intermediate formation of 2-(2,3-dibrompropylthio)benzimidazoles. P
Heterocyclization of 2-Allylthiobenzimidazoles into Derivatives of Benzimidazo-1,3-Thiazines
Korotkikh, N. I.,Raenko, G. F.,Shvaika, O. P.
, p. 359 - 363 (2007/10/03)
It was found that bromination of 2-allylthiobenzimidazoles in organic solvents forms products of addition of bromine to the olefin bond - 2,3-dibromopropylthiobenzimidazoles, whch spontaneously or on heating cyclize into 3-bromobenzimidazo-1,3-thiazines or cyclodehydrobromination products - 2H- or 4H-benzimidazo-1,3-thiazines.
REARRANGEMENT OF 1-(2-PROPYNYL)BENZIMIDAZOLINE-2-THIONES TO 2H(4H)-1,3-THIAZINOBENZIMIDAZOLES
Klyuev, N. A.,Krasovskii, A. N.,Sheinkman, A. K.,Krasovskii, I. A.,Zhil'nikov, V. G.
, p. 1555 - 1561 (2007/10/02)
1-(2-Propynyl)-2-chlorobenzimidazoles were synthesized by the reaction of 2-chlorobenzimidazoles with propargyl bromide.When boiled with thiourea, they are converted into 1-(2-propynyl)benzimidazolin-2-thiones.When heated in an alcohol solution of potassium hydroxide, the latter rearrange to mixtures of isomeric 2H(4H)-1,3-thiazinobenzimidazoles.
