作者:Huei-Sin Wang、Yan-Shin Wu、Meng-Yang Chang
DOI:10.1016/j.tet.2017.09.047
日期:2017.11
2-arylpropenes 1 affords oxygenated sulfonylcumenes 4 in moderate yields via a sequential route: (i) NBS-mediated allylic bromination of 2-arylpropenes 1 in CH2Cl2, (ii) sodium sulfinates 2-promoted nucleophilic substitution of the resulting styryl bromides in a co-solvent of alcohol and water, and (iii) V2O5/H2O2 mediated alkoxyhydroxylation of corresponding styryl sulfones 3 in alcohol. The synthetic route provides
一键式三步合成2-芳基丙烯1的磺酰化烷氧基羟基化反应可通过以下顺序以中等收率得到含氧的磺酰基枯烯4:(i)NBS介导的CH 2 Cl 2中2-芳基丙烯1的烯丙基溴化,(ii)亚磺酸钠2醇和水的共溶剂中苯乙烯基溴化物的亲核取代反应得到促进;以及(iii)V 2 O 5 / H 2 O 2介导的相应苯乙烯基砜3的烷氧基羟化反应在酒精中。合成路线通过两个碳-氧和一个碳-硫键的形成为2-芳基丙烯1的1,2,3-三氟官能化提供了高效的方法。