摘要
报道了一种高原子经济性、高选择性合成β-羰基膦酸酯类化合物的催化水合体系.实验发现以廉价的Ag OAc作为催化剂,甲醇作为助催化剂,炔基膦酸酯顺利发生水合反应生成相应的目标产物,产率优秀.反应无需惰性气体保护,具有良好的官能团耐受性,杂环、卤素等官能团及杂环体系都对反应无明显影响.
β-Ketophosphonates are an important class of carbonyl compounds which exhibit a wide range of biological activities and outstanding metal-complexing abilities. They are building blocks in organic synthesis, especially as intermediates for the synthesis of α,β-unsaturated carbonyl compounds, chiral β-hydroxy and β-hydroxy phosphonic acids. In this paper, a cheap, simple, convenient and environmentally benign method to synthesize the β-ketophosphonates from alkynylphosphonates was developed, which can be easily prepared in one step from commercial terminal alkynes. In the presence of 10 mol% AgOAc and 4 equiv. of water in methanol at 110 ℃, a broad range of alkynylphosphonates were converted into the corresponding β-ketophosphonates in nearly equivalent conversion through silver/methanol-catalyzed hydration reaction. The presented methodology will provide new strategies for β-ketophosphonates-type natural product and drug synthesis, which has important academic significance and application value.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2015年第9期1889-1896,共8页
Chinese Journal of Organic Chemistry
基金
湖南省科技计划(No.2014FJ3053)
国家自然科学基金(No.21176061)
湖南省自然科学基金(No.13JJ3132)
湖南省重点建设学科
衡阳市科技计划(No.2014KJ26)资助项目~~
