Reaction of diazonium salts with transition metals—III
作者:K. Kikukawa、K. Nagira、F. Wada、T. Matsuda
DOI:10.1016/s0040-4020(01)97711-7
日期:1981.1
Palladium (0) catalyzed reactions of arenediazonium salts for arylation of aliphatic and cyclic olefins and allylic alcohols, styrene and ethyl acrylate were studied. Effects of the olefinic compounds and other reaction variables on the arylation were presented. Arylpalladiumspecies was proposed as the most plausible intermediated in this reaction.
Pyrazolo [3,4-B] pyridine Compounds and Their Use as Phosphodiesterase Inhibitors
申请人:Allen George David
公开号:US20070111995A1
公开(公告)日:2007-05-17
The invention provides pyrazolo[3,4-b]pyridine compounds of formula (I) having a —C(O)—NH—C(R
4
)(R
5
)-aryl substituent at the 5-position of the pyrazolo[3,4-b]pyridine ring system wherein at least one of R
4
and R
5
is not a hydrogen atom (H) compound or a salt thereof:
wherein Ar has the sub-formula (x) or (z).
These compounds are useful as inhibitors of PDE4.