Visible light promoted coupling of alkynyl bromides and Hantzsch esters for the synthesis of internal alkynes
作者:Zhi-Yong Song、Chun-Lin Zhang、Song Ye
DOI:10.1039/c8ob02912a
日期:——
A metal-free visible light promoted C(sp3)–C(sp) coupling reaction of alkynyl bromides and Hantzsch esters was developed, giving internal alkynes with primary, secondary, tertiary alkyl or other functional groups in good to high yields.
Process for the palladium-catalyzed coupling of terminal alkynes with aryl tosylates
申请人:RKYEK Omar
公开号:US20100261910A1
公开(公告)日:2010-10-14
The present invention relates to a process for the regioselective synthesis of compounds of the formula (I),
wherein R1; R2; R3; R4; R5; J and W have the meanings indicated in the claims. The present invention provides an efficient and general palladium-catalyzed coupling process for aryl tosylates with terminal alkynes to a wide variety of substituted, multifunctional aryl-1-alkynes of the formula I.