作者:Lakshmi V.R. Babu Syamala、Tushar M. Khopade、Prakash K. Warghude、Ramakrishna G. Bhat
DOI:10.1016/j.tetlet.2018.11.065
日期:2019.1
A dual cooperative organocatalytic approach for the synthesis of α, β-unsaturated ketones is described. This one pot transformation is realized via a domino Knoevenagel-Michael-retro Michael reaction sequence. Various aliphatic ketones reacted smoothly with aromatic as well as aliphatic aldehydes in presence catalytic amount of Meldrum’s acid and bifunctional amine. The highlights of this protocol
描述了合成α,β-不饱和酮的双重协同有机催化方法。一锅转换是通过多米诺Knoevenagel-Michael-复古Michael反应序列实现的。在催化量的Meldrum酸和双官能胺的存在下,各种脂族酮与芳族以及脂族醛均能平稳反应。该协议的亮点是催化剂的易用性,高选择性和官能团耐受性。与碱介导的反应不同,该反应被证明具有高度的E选择性,并且不会因自缩合而产生副产物。