@article{oai:soar-ir.repo.nii.ac.jp:00011819,
 author = {Shoji,  Taku and Inoue,  Yuta and Ito,  Shunji and Okujima,  Tetsuo and Morita,  Noboru},
 issue = {1},
 journal = {HETEROCYCLES},
 month = {Jan},
 note = {An efficient synthesis of 2-heteroarylazulene derivatives was established via electrophilic substitution. The reaction of 6-dimethylamino-1,3-di(methylthio)azulene (1a) with the triflate of N-containing heteroarenes proceeded in the presence of excess heteroarenes to afford the corresponding 2-dihydroheteroarylazulene derivatives 3-7. The 2-dihydroheteroarylazulene derivatives were readily converted into the desired 2-heteroarylazulene derivatives 8-11 by the treatment with KOH in alcohols in excellent yields, except for 4 and 5., Article, HETEROCYCLES. 85(1):35-41 (2012)},
 pages = {35--41},
 title = {FIRST SYNTHESIS OF 2-HETEROARYLAZULENES BY THE ELECTROPHILIC SUBSTITUTION OF AZULENE WITH TRIFLATE OF N-CONTAINING HETEROCYCLES},
 volume = {85},
 year = {2012}
}