A facile, aqueous phase green synthetic protocol for the synthesis of 5,9b-dihydro-1H-[1,2,4]triazino[5,6-b]indole-3-ols/5,9b-dihydro-1H-[1,2,4]triazino[5,6-b]indole-3-thiols
作者:K. Ramesh、S. Narayana Murthy、K. Karnakar、Y.V.D. Nageswar
DOI:10.1016/j.tetlet.2011.06.098
日期:2011.9
5,9b-Dihydro-1H-[1,2,4]triazino[5,6-b]indole-3-ols/5,9b-dihydro-1H-[1,2,4]triazino[5,6-b]indole-3-thiols were synthesized for the first time in water under neutral conditions by using isatin, semicarbazide/thiosemicarbazide, mediated by β-cyclodextrin in excellent yields. β-Cyclodextrin has been recovered and reused without any loss of catalytic activity.
5,9b-二氢-1 H- [1,2,4]三嗪[5,6- b ]吲哚-3-醇/ 5,9b-二氢-1 H- [1,2,4]三嗪[5, 6- b ]吲哚-3-硫醇被首次在水中中性条件下通过使用靛红,氨基脲/氨基硫脲的合成,通过β环糊精以优良产率介导的。β-环糊精已被回收并重新使用,而没有任何催化活性的损失。