DBU-Catalyzed Rearrangement of Secondary Propargylic Alcohols: An Efficient and Cost-Effective Route to Chalcone Derivatives
作者:Mrinal K. Bera、Rimpa De、Antony Savarimuthu、Tamal Ballav、Pijush Singh、Jayanta Nanda、Avantika Hasija、Deepak Chopra
DOI:10.1055/s-0040-1707909
日期:2020.10
A 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-catalyzed rearrangement of diarylated secondary propargylic alcohols to give α,β-unsaturated carbonyl compounds has been developed. The typical 1,3-transposition of oxy functionality, characteristic of Mayer–Schuster rearrangements, is not observed in this case. A broad substrate scope, functional-group tolerance, operational simplicity, complete atom economy
已开发出 1,8-二氮杂双环 [5.4.0] 十一碳-7-烯 (DBU) 催化的二芳基化仲炔醇重排得到 α,β-不饱和羰基化合物。在这种情况下没有观察到典型的 1,3-氧官能团转位,这是 Mayer-Schuster 重排的特征。广泛的底物范围、官能团耐受性、操作简单、完全的原子经济性和优异的产率是该反应的突出特点。此外,还研究了所选化合物的光物理性质和晶体结构堆积行为,发现它们很有趣。