1,2-BIS-(1-GLYCIDYLBENZIMIDAZOLE-2-YLTHIO)-ETHANE AS COHARDENING AGENT OF EPOXY RESINS AND 1,2-BIS-(BENZIMIDAZOLE-2-YLTHIO)-ETHANE AS AN INTERMEDIATE COMPOUND FOR SYNTHESIS OF 1,2-BIS-(1-GLYCIDYLBENZIMIDAZOLE-2-YLTHIO)-ETHANE AS COHARDENING AGENT OF EPOXY RESINS

摘要

FIELD: organic chemistry, chemical technology. SUBSTANCE: product: 1,2-bis-(1-glycidylbenzimidazole-2-ylthio)-ethane, empirical formula is C₂₂H₂N₄O₄S₂, yield is 87%, m. p. is 158-162 C; 1,2-bis-(benzimidazole-2-ylthio)-ethane, empirical formula is C₁₆H₁₄N₄S₂, yield is 60%, m. p. is 264-266 C. Reagent 1: benzimidazolethione-2. Reagent 2: dibromoethane. Reaction conditions: alkaline spirituous medium. Reagent 3: 1,2-bis-(benzimidazole-2-ylthio)-ethane. Reagent 4: epichlorohydrin. Reaction condition: in the presence of alkali. EFFECT: improved method of synthesis, increased yields. 7 ex, 1 tbl