1673-62-7Relevant academic research and scientific papers
Synthesis and thermal reactivity of thiazolo[3,4-a]benzimidazole-2,2-dioxides: Approach to 1H-benzo[d]imidazoles via novel benzo-2,5-diazafulvenium methides
Soares, Maria I.L.,Pinho e Melo, Teresa M.V.D.
, p. 4227 - 4235 (2015/06/02)
Abstract The generation and reactivity of novel benzo-2,5-diazafulvenium methides was explored. Thiazolo[3,4-a]benzimidazole-2,2-dioxides have been prepared and used as precursors of benzo-2,5-diazafulvenium methides, whose pericyclic reactions led to the
Synthesis of annelated imidazoles and benzimidazoles
McClure, James R.,Custer, John H.,Schwarz, H. Dean,Lill, Deborah A.
, p. 710 - 712 (2007/10/03)
A variety of fused ring imidazole or benzimidazole derivatives were prepared through two successive condensations of a dihalide with 4,5- diphenylimidazole or benzimidazole. The 2-methyl substituted derivatives of 4,5-diphenylimidazole or benzimidazole were also used. The size of the annelated ring, which is dependent on the dihalide used, can be varied from five to seven atoms. Initially, N-alkylhalo derivatives were prepared by condensation of the heterocyclic starting materials with a dihalide. Ring closure was then effected through intramolecular condensation of a carbanion derived from the 2-position or the 2-methyl group of the parent heterocyclic ring with the N-alkylhalo moiety.
