Bi(OTf)3 catalyzed synthesis of acyclic β-sulfanyl ketones via a tandem Meyer-Schuster rearrangement/conjugate addition reaction
作者:Yuan Wang、Yan Yin、Qinglin Zhang、Wanyong Pan、Huifeng Guo、Keke Pei
DOI:10.1016/j.tetlet.2019.06.064
日期:2019.7
sulfur nucleophiles is reported. The investigation of the reaction substrates scope indicated that primary 3-aryl propargyl alcohols and thiols underwent the transformation smoothly. The reaction probably proceeded a Bi(OTf)3-catalyzed tandem Meyer-Schuster rearrangement of 3-aryl propargyl alcohol, followed by a thiol Michael conjugate addition of thiols to in situ generated α, β-unsaturated ketones
报道了由炔丙醇和硫亲核试剂制备无环β-羰基硫醚的新策略。对反应底物范围的研究表明,伯3-芳基炔丙醇和硫醇顺利进行了转化。该反应可能进行了Bi(OTf)3催化的3-芳基炔丙醇的串联迈耶-舒斯特重排,然后将硫醇的硫醇迈克尔共轭加成到原位生成的α,β-不饱和酮。该方法是100%原子经济,高产率且易于操作的方法,使其成为构建β-羰基硫化物的有价值的方法。