Metal-free oxidative decarbonylative coupling of aromatic aldehydes with arenes: direct access to biaryls
作者:Ren-Jin Tang、Qing He、Luo Yang
DOI:10.1039/c4cc10155c
日期:——
A metal-free oxidative decarbonylative coupling of aromatic aldehydes with electron-rich or electron-deficient arenes to produce biaryl compounds was developed. This novel coupling was proposed to proceed via a non-chain radical homolytic aromatic substitution (HAS) type mechanism, based on the substrate scope, ortho-regioselectivity, radical trapping experiments and DFT calculation studies. With the
The invention relates to compounds of formula (I) wherein R
1
, R
2
, X
1
, X
2
, Y, R
a
, R
b
, Q have the meanings given in claim
1
. The compounds are useful e.g. in the treatment of autoimmune disorders, such as multiple sclerosis and also in the treatment of cancer disorders.