17228-38-5Relevant articles and documents
Nucleophilic aromatic substitution of heterocycles using a high-temperature and high-pressure flow reactor
Charaschanya, Manwika,Bogdan, Andrew R.,Wang, Ying,Djuric, Stevan W.
, p. 1035 - 1039 (2016/02/18)
We report herein a high-temperature and high-pressure continuous-flow protocol to carry out nucleophilic aromatic substitution (SNAr) of heterocycles with nitrogen nucleophiles. Utilizing the Phoenix Flow Reactor in parallel with Design-of-Experiment software enabled rapid optimization of the SNAr protocol. This protocol facilitated efficient synthesis of a broad range of 2-aminoquinazolines, and was extended to 2-aminoquinoxalines and 2-aminobenzimidazoles.
CHEMICAL COMPOUNDS
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Page/Page column 29, (2012/01/03)
There is provided pyrimidinyl compounds of Formula (I), wherein: R2 is or pharmaceutically acceptable salts thereof, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
OXIDATIVE CYCLIZATION OF 2-AMINO-1-ARYLIDENEAMINOBENZIMIDAZOLES INTO 1,2,4-TRIAZOLOBENZIMIDAZOLES
Kuz'menko, T. A.,Kuz'menko, V. V.,Pozharskii, A. F.,Klyuev, N. A.
, p. 1012 - 1017 (2007/10/02)
When heated in nitrobenzene, 1-arylideneamino-2-methylaminobenzimidazoles convert in a 20...30percent yield into 2-aryl-3-methyl-1,2,4-triazolobenzimidazoles.In addition, 2-methylaminobenzimidazole and the corresponding benzonitrile are formed as a result of thermal splitting of the N-N bond.Under the same conditions, 2-amino-1-arylideneaminobenzimidazoles and 1-arylideneamino-3-methylbenzimidazoline-2-imines give only products of splitting off of the nitrile.In several cases, the subsequent reaction of the nitrile with 2-amino-1-methylbenzimidazole leads to the formation of benzamidines.