One-potthree-componentsynthesis of α-methylated ketones from secondary and primaryalcohols via a triple dehydrogenative method is presented here. This protocol uses a polystyrene-supported catalyst and the catalyst is reused for five runs without any drop in its activity. Detailed mechanistic investigation was carried out with control reactions and deuterium labelling experiments revealed that secondary
Nickel‐Catalyzed Chemodivergent Coupling of Alcohols: Efficient Routes to Access α,α‐Disubstituted Ketones and α‐Substituted Chalcones
作者:Sadhna Bansal、Benudhar Punji
DOI:10.1002/chem.202304082
日期:2024.3.12
The chemodivergent nickel-catalyzed approach provides α,α-disubstituted ketones from aryl-substituted secondary alcohols and benzyl alcohols via the borrowinghydrogen (BH) strategy in the presence of KOtBu, whereas exclusively α-substituted chalcones were accomplished in the presence of mild base K2CO3 through an acceptorless dehydrogenative coupling (ADC) strategy.
化学发散镍催化方法在 KO t Bu 存在下通过借氢 (BH) 策略从芳基取代的仲醇和苯甲醇提供α , α-二取代酮,而仅α-取代查耳酮是在 KO t Bu 存在下完成的。通过无受体脱氢偶联 (ADC) 策略实现弱碱 K 2 CO 3 。