نتایج جستجو برای: benzoxazoles
تعداد نتایج: 141 فیلتر نتایج به سال:
Phospho sulfonic acid (PSA) synthesized as an environmentally safe and efficient solid acid catalyst, and it used for the synthesis of several 2-disubstituted benzimidazoles, 2-substituted benzoxazoles, and 2-substituted quinoxalines in ethanol as a green solvent at ambient temperature is described. (i) A very simple, green and efficient procedure for the synthesis of benzimidazole and also benz...
Quaternary 2-thiomethylbenzazoles are important class of intermediates involved in the synthesis of symmetric and asymmetric monomethine cyanine dyes. In addition to, 2methylmercaptobenzothiazole, and 2methylmercaptobenzoxazole derivatives represent an essential group of compounds for the synthesis of cyanine dyes [1–3]. S-Alkylated heterocyclic derivatives are known as key compounds, finding a...
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