The invention concerns pharmaceutically useful compounds of the formula I, in which Q, X, Z and Ra have the various meanings defined herein, and their non-toxic salts, and pharmaceutical compositions containing them. The novel compounds are of value in treating conditions such as hypertension and congestive heart failure. The invention further concerns processes for the manufacture of the novel compounds and the use of the compounds in medical treatment.
本发明涉及式 I 的药用化合物(其中 Q、X、Z 和 Ra 具有本文定义的各种含义)及其无毒盐和含有它们的药物组合物。这些新型化合物具有治疗高血压和充血性心力衰竭等疾病的价值。本发明还涉及新型化合物的生产工艺以及这些化合物在医疗中的应用。
Direct C–H Bond Arylation of (Benzo)oxazoles with Aryl Chlorides Catalyzed by <i>N</i>-Heterocyclic Carbene–Palladium(II)–1-Methylimidazole Complex
The direct C-H bond arylation of (benzo)oxazoles with aryl chlorides was achieved catalyzed by a well-defined NHC-Pd(II)-Im complex. Under the optimal conditions, various aryl chlorides were successfully applied as the arylating reagents to achieve the 2-aryl (benzo)oxazoles in acceptable to high yields, providing a convenient and alternative method for the direct C-H bond arylation of (benzo)oxazoles and enriching the chemistry of the NHC-Pd(II) complex in organic synthesis.