A convenient synthesis of 2-(2-(difluoromethoxy)aryl)benzo[d]thiazoles from 2- (o-hydroxyaryl)benzothiazoles and commercially available ethyl difluoroiodoacetate (ICF2CO2Et) is described. The transformation was amenable to a one-pot, sequential three-component protocol from o-hydroxybenzaldehyde, o-aminothiophenol, and ICF2CO2Et promoted by KOH. Additionally, some of the prepared compounds exhibited
描述了由2-(邻-羟基芳基)苯并噻唑和可商购的二氟碘乙酸乙酯(ICF 2 CO 2 Et)方便地合成2-(2-(二氟甲氧基)芳基)苯并[d]噻唑的方法。变换为适合于从一釜,顺序三组分协议ö羟基苯甲醛,ø -aminothiophenol,和ICF 2 CO 2的Et促进由KOH。另外,一些制备的化合物对人卵巢癌细胞显示出有希望的活性。
Several novel fused heterocyclic systems which have rings containing N/O or N/S have been synthesized through a facile one-pot method by the treatment of substituted 2-(benzo[d]thiazol-2-yl)phenol and cyanogen bromide in THF and NEt3. This one-pot method contains tough ring-opening of thiazole, special intermolecular rearrangement and ring-closing reactions. The newly synthesized compounds were characterized
closely related aluminium salicylbenzoxazole complexes previously investigated. In the presence of benzyl alcohol, all complexes were active initiators and the polymerizations were all well-controlled and living. Kinetic studies revealed first-order kinetics in the monomer. In comparison, the catalytic activity of aluminum salicylbenzothiazole complexes was lower than that of aluminium salicylbenzoxazole
Highly efficient AgNO<sub>3</sub>
-catalyzed approach to 2-(benzo[<i>d</i>
]azol-2-yl)phenols from salicylaldehydes with 2-aminothiophenol, 2-aminophenol and benzene-1,2-diamine
derivatives in good to excellent yields (63–98%) is described. The reaction proceeds via condensation/intramolecular nucleophilic addition/oxidation process between substituted salicylaldehydes and 2‐aminothiophenol, 2‐aminophenol or benzene‐1,2‐diamine under mild reaction conditions. Notably, this reaction utilizes cheap AgNO3 as a readily available and low‐cost benign oxidant at low catalyst loadings with
描述了一种新的,便捷有效的AgNO 3催化策略,用于制备2-(苯并[ d ] azol-2-基)苯酚衍生物,产率高至优异(63-98%)。反应在温和的反应条件下通过取代的水杨醛与2-氨基硫酚,2-氨基酚或苯1,2-二胺之间的缩合/分子内亲核加成/氧化过程进行。值得注意的是,该反应利用廉价的AgNO 3作为易于获得的低成本良性氧化剂,催化剂负载低,具有出色的官能团耐受性。