50625-52-0Relevant articles and documents
A [4 + 3] Annulation Reaction of aza- o-Quinone Methides with Arylcarbohydrazonoyl Chlorides for Synthesis of 2,3-Dihydro-1 H-benzo[ e][1,2,4]triazepines
Guo, Zhenyan,Jia, Hao,Liu, Honglei,Wang, Qijun,Huang, Jiaxing,Guo, Hongchao
supporting information, p. 2939 - 2943 (2018/05/28)
An unprecedented [4 + 3] annulation reaction of aza-ortho-quinone methides with arylcarbohydrazonoyl chlorides has been achieved under mild conditions. The annulation underwent a sequential conjugate addition/intramolecular annulation/rearrangement, providing a useful method for the synthesis of biologically interesting 2,3-dihydro-1H-benzo[e][1,2,4]triazepine.
Copper-catalyzed synthesis of substituted indazoles from 2-chloroarenes at low catalyst-loading
Tanimori, Shinji,Kobayashi, Yasuyuki,Iesaki, Yasukazu,Ozaki, Yuka,Kirihata, Mitsunori
experimental part, p. 1381 - 1387 (2012/04/04)
An efficient and convenient access to 1-substituted indazol-3-ones 2 has been achieved throughout the intramolecular C-N bond formations of 2-chloro-benzoic acid-N′-aryl and alkyl-hydrazides employing 0.5 mol% of cuprous (I) iodide and 20 mol% of l-prolin