13362-59-9Relevant articles and documents
A facile synthesis of phenazine and quinoxaline derivatives using magnesium sulfate heptahydrate as a catalyst
Karami, Bahador,Khodabakhshi, Saeed
, p. 1191 - 1198 (2011)
Convenient and simple procedures for the synthesis of phenazine and quinoxaline derivatives were developed via a reaction of o-phenylenediamines and 1,2-dicarbonyl compounds. In addition, the synthesis of two new 1,4-benzodiazine derivatives and the catal
Organocatalytic combinatorial synthesis of quinazoline, quinoxaline and bis(indolyl)methanes
Badri, Rashid,Khaksar, Samad,Malamiri, Fatemeh,Tahanpesar, Elham
, p. 83 - 88 (2020/03/30)
Aims and Objective: An efficient and practical procedure for the synthesis of heterocyclic compounds such as quinazolines, quinoxalines and bis(indolyl)methanes was developed using 3,5-bis(trifluoromethyl) phenyl ammonium hexafluorophosphate (BFPHP) as a novel organocatalyst. Materials and Methods: All of the obtained products are known compounds and identified by IR, 1HNMR, 13CNMR and melting points. Result: Various products were obtained in good to excellent yields under reaction conditions Conclusion: The BFPHP organocatalyst demonstrates a novel class of non-asymmetric organocatalysts, which has gained much attention in green chemistry.
Synthesis of benzimidazole and quinoxaline derivatives using reusable sulfonated rice husk ash (RHA-SO3H) as a green and efficient solid acid catalyst
Shamsi-Sani, Mahnaz,Shirini, Farhad,Abedini, Masoumeh,Seddighi, Mohadeseh
, p. 1091 - 1099 (2016/04/26)
In this work, a simple, rapid and efficient method for the preparation of benzimidazoles and quinoxalines from the condensation of o-phenylene diamines with aldehydes and/or 1,2-dicarbonyl compounds in the presence of sulfonated rice husk ash (RHA-SO3H) as an efficient green catalyst is reported. RHA-SO3H can be easily prepared using a readily available organic compound by simple modification of rice husk ash. All reactions are performed under mild reaction conditions with high to excellent yields. The method is applicable to aromatic, unsaturated and hetero aromatic aldehydes. The advantages of this method are short reaction times, milder conditions, easy work-up, solvent-free conditions and catalyst reusability.
Synthesis of quinoxalines by a carbon nanotube-gold nanohybrid-catalyzed cascade reaction of vicinal diols and keto alcohols with diamines
Shah, Nimesh,Gravel, Edmond,Jawale, Dhanaji V.,Doris, Eric,Namboothiri, Irishi N. N.
, p. 57 - 61 (2015/03/05)
A one-pot oxidation-condensation method for the synthesis of quinoxalines from readily available benzoins or benzhydrols and 1,2-phenylenediamines or 2,3-diaminopyridine by use of a gold-carbon nanotube nanohybrid as a heterogeneous catalyst is reported. Quinoxalines are formed under mild conditions in air and in excellent yields. The simple and efficient methodology offers a safe and sustainable alternative to conventional acid and/or base-catalyzed thermal processes.