Facile Cu-free Sonogashira cross-coupling of nucleoside C-6 arylsulfonates with terminal alkynes
作者:Felix N. Ngassa、Jamie M. Gomez、Brandon E. Haines、Michael J. Ostach、Jared W. Hector、Lindsay J. Hoogenboom、Chelsea E. Page
DOI:10.1016/j.tet.2010.08.032
日期:2010.10
The combination of PdCl2[CH3CN]2 with XPhos is an efficient catalytic system for the Sonogashira-type cross-coupling of 2′-deoxyguanosine O6-arylsulfonates with terminal alkynes. The reactions generally proceed under mild conditions requiring no Cu co-catalyst to give the corresponding C-6-alkynylated deoxynucleosides in moderate to good yields.
PdCl 2 [CH 3 CN] 2与XPhos的结合是2'-脱氧鸟苷O 6-芳基磺酸盐与末端炔烃的Sonogashira型交叉偶联的有效催化体系。反应通常在温和的条件下进行,不需要Cu助催化剂以中等至良好的产率得到相应的C-6-炔基化的脱氧核苷。