669718-39-2Relevant academic research and scientific papers
Three-component synthesis of 4-aryl-1H-pyrimido[1,2-a] benzimidazole derivatives in ionic liquid
Yao, Changsheng,Lei, Song,Wang, Cuihua,Li, Tuanjie,Yu, Chenxia,Wang, Xiangshan,Tu, Shujiang
, p. 26 - 32 (2010)
(Chemical Equation Presented) A green and simple synthesis of 4-ayrl-3,4-dihydro-1H-pyrimido[1,2-a]benzimidazole derivatives was accomplished in excellent yields via the reaction of aryl aldehyde, 1,3-dicarbonyl compounds and 1Hbenzo[ d]imidazol-2-amine in ionic liquid of [bmim+][BF 4- ]. This protocol has the advantages of easier work-up, mild reaction conditions, high yields, and an environmentally benign procedure compared with the reported methods.
Catalyst, system and method for achieving simple and convenient catalytic preparation of benzimidazo [2, 1-b] quinolin-6-one derivative
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Paragraph 0057; 0058; 0059, (2017/11/18)
The invention discloses a catalyst, a system and a method for achieving simple and convenient catalytic preparation of a benzimidazo [2, 1-b] quinolin-6-one derivative, and belongs to the technical field of preparation of chemical materials. The system comprises a reaction container, a microwave reactor, a suction filtration device, a washing device and a drying device. Aromatic aldehyde, 1, 3-cyclohexanedione and 2-aminobenzimidazole are used as reactive raw materials, and through selection of specific functionalized ionic liquid as a catalyst and in a microwave-assisted heating reaction way, the utilization rate of the raw materials and the yield rate of the obtained product can be effectively increased; the catalyst is relatively small in using amount, good in recycling performance and low in preparation cost and is conveniently produced industrially on a large scale.
Green and high efficient synthesis of triaza-benzo[b]fluoren-6-one derivatives in water under microwave irradiation
Shao, Qingqing,Tu, Shujiang,Li, Chunmei,Cao, Longji,Zhou, Dianxiang,Wang, Qian,Jiang, Bo,Zhang, Yan,Hao, Wenjuan
, p. 411 - 416 (2008/09/19)
(Chemical Equation Presented) Triaza-benzo[b]fluoren-6-one derivatives were synthesized via the three-component reaction of aldehyde, cyclohexane-1,3-dione compound and 2-aminobenzimidazole in water under microwave irradiation. The new protocol has the advantages of excellent yield, low cost, reduced environment impact, wide scope and convenient procedure.
