Cross-coupling of 1,1-difluoro-1-en-3-yn-2-yl tosylates with arylboronic acids: A new approach to 2-aryl-1,1-difluoro-1,3-enynes
作者:Su Jin Kim、Hyun Gyu Ryu、Sung Lan Jeon、In Howa Jeong
DOI:10.1016/j.jfluchem.2016.08.014
日期:2017.4
The palladium-catalyzed direct alkynylation of 2,2-difluoro-1-tributylstannylethenyl p-toluenesulfonate 1 with alkynyl bromides provided the corresponding 1,1-difluoro-1,3-enynyl tosylates 2 in good yields. The Suzuki-Miyaura arylation reaction of 2 with arylboronic acids afforded the cross-coupled products, 2-aryl-1,1-difluoro-1,3-enynes 3, in good yields.
2,2-二氟-1- tributylstannylethenyl的钯催化的直接炔基p甲苯磺酸盐1与炔基溴化物提供相应的1,1-二氟-1,3- enynyl甲苯磺酸酯2以良好的收率。2与芳基硼酸的Suzuki-Miyaura芳基化反应以高收率提供了交联产物2-芳基-1,1-二氟-1,3-烯炔3。