Simple and Efficient Synthesis of 2-Aryl-2,3-Dihydroquinolin-4(1<i>H</i>)-ones Using Silica Chloride as a New Catalyst Under Solvent-Free Conditions
作者:M. Muthukrishnan、M. Mujahid、V. Punitharasu、D. A. Dnyaneshwar
DOI:10.1080/00397910903097252
日期:2010.4.12
A mild, efficient, and high-yielding method for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones from their corresponding 2-amino chalcones using silica chloride (SiO2Cl) under solvent-free conditions is described. A series of 2-aryl-2,3-dihydroquinolin-4(1H)-ones containing both electron-donating and electron-withdrawing substituents were synthesized.
CBr<sub>4</sub> catalyzed activation of α,β-unsaturated ketones
作者:Shyamal Kanti Bera、Rajat Rajiv Maharana、Kousik Samanta、Prasenjit Mal
DOI:10.1039/d2ob01223e
日期:——
the carbonyl group of α,β-unsaturatedketones. Carbon tetrabromide (CBr4) has been used as the sole reagent for the selective synthesis of flavanones and aza-flavanones from the corresponding 2′-hydroxy- and 2′-aminochalcones under metal-free and additive-free conditions. DFT calculations support the catalytic role of XB between the oxygen of chalcones and CBr4 in these reactions.