Syntheses of heterocyclic compounds. Part XXIV. Cyclisation studies with ortho-substituted arylcarbene and arylnitrene precursors
作者:G. V. Garner、D. B. Mobbs、H. Suschitzky、J. S. Millership
DOI:10.1039/j39710003693
日期:——
indolines. The scope and mechanism of this cyclisation have been explored. Moreover, benzaldehyde tosylhydrazones with o-alkoxy-, o-thioalkyl-, and o-phosphonate substituents as well as the corresponding diazoalkanes were pyrolysed and photolysed. The products from these carbene precursors were compared with those obtained from the analogous nitrene precursors [i.e. ArN3 or ArNO2+(RO)3P].
Synthesis of 1‐Aryl Isoquinolinones or
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‐Diaryl Pyrimidines via Bismuth Triflate‐Mediated Intermolecular Annulation of Arylacetic Acids with Nitroarylaldehydes or Trimethoxybenzene in the Presence of Acetonitrile
作者:Meng‐Yang Chang、Chun‐Yi Lin、Shin‐Mei Chen
DOI:10.1002/adsc.202200517
日期:2022.8.2
In this article, bismuth triflate (Bi(OTf)3)-controlled intermolecular multi-component condensation of oxygenated arylacetic acids with electron-withdrawing nitroarylaldehydes or electron-donating trimethoxybenzene provide 1-aryl isoquinolinones or o-diaryl pyrimidines in acetonitrile at 60 °C. The uses of various metal triflates and reaction conditions are investigated in the one-pot reaction. Only
A series of 2-phenyl-5-methyl-2H-1,2,3-triazole-4-carboxylic acids/carbohydrazides as analogues of febuxostat were synthesized and evaluated for their in vitro xanthine oxidase (XO) inhibitory activity.
合成了一系列作为非布索坦类似物的2-苯基-5-甲基-2 H -1,2,3-三唑-4-羧酸/碳酰肼,并对其体外黄嘌呤氧化酶(XO)抑制活性进行了评估。