A Catalyst-Free Expeditious Green Synthesis of Quinoxaline, Oxazine, Thiazine, and Dioxin Derivatives in Water under Ultrasound Irradiation
作者:Ankush Mishra、S. Singh、M. A. Quraishi、Vandana Srivastava
DOI:10.1080/00304948.2019.1596469
日期:2019.7.4
been reported in the literature. Conventionally, quinoxaline derivatives were synthesized by using different catalysts such as acetic acid, molecular iodine, o-iodoxybenzoic acid, montmorillonite K-10, polyaniline sulfate, nitrilotris(methylenephosphonic acid), aqueous HF, sulfamic acid, NH4Cl-CH3OH, 26 Amberlyst-15 and metal catalysts such as cerium(IV) ammonium nitrate (CAN), gallium(III) triflate
喹喔啉、1,4-恶嗪、1,4-噻嗪和 1,4-二恶英衍生物是重要的杂环化合物,因其药理重要性和生物活性而受到广泛关注。这些衍生物也是合成太阳能电池、染料、颜料、有机半导体和化学开关的基本支架。有许多药物具有这些核心结构单元(图 1)。由于其广泛的生物活性,文献中已经报道了许多合成策略。通常,喹喔啉衍生物是通过使用不同的催化剂合成的,例如乙酸、分子碘、邻碘苯甲酸、蒙脱石 K-10、聚苯胺硫酸盐、次氮基(亚甲基膦酸)、HF 水溶液、氨基磺酸、NH4Cl-CH3OH、