A general and efficient method for the direct alkynylation of unactivatedC(sp3)-H bondsunder metal-free condition is described. The reaction smoothly performs undermildconditions and shows excellent functional-group tolerance....
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.
Hydroxy, alkoxy and acyloxy ethynylbenzene compounds and their derivatives which are useful for the treatment for the relief of inflammation, pain and fever.
Ethynylbenzene compounds and derivatives thereof to treat pain, fever
申请人:William H. Rorer, Inc.
公开号:US04171373A1
公开(公告)日:1979-10-16
The method of treating patients by administering an effective amount of a mercapto, lower acyl thio or lower alkyl thio substituted ethynylbenzene compound, and the pharmaceutical preparation thereof.