21799-89-3Relevant articles and documents
Preparation of Benzo-diimidazoles and Benzo-triimidazoles
Mataka, Shuntaro,Irie, Takashi,Ikezaki, Youji,Tashiro, Masashi
, p. 1819 - 1822 (2007/10/02)
The reaction of benzenehexamine (1), benzene-1,2,3,4-tetramine (4), and benzene-1,2,4,5-tetramine (6) with aryl isocyanate 2 afforded the corresponding hexakis(N'-arylureido)benzene 3 and the tetrakis(N'-arylureido)benzenes 5 and 7.Pyrolysis of 3, 5, and 7 at 400 deg C furnished the benzo-triimidazoletrione 8 and benzo-biimidazolediones 10 and 11. - Key Words: Benzo-triimidazoles / Benzo-diimidazoles / Benzenehexamine