Abstract: Modern cross-couplings of arylmagnesium bromides with dibromoarenes gave 3, 3'''-dimethylquaterphenyl and, from its dibromination product, 2', 3''''-dimethyl-p-sexiphenyl (DMSP) in high yield with use of the air-stable PdCl2∑ dppb in catalytic amount. Arylboronic acids need not be prepared as intermediates, and use of pyrophoric aryllithiums was avoided. DMSP is a useful scintillation fluor with high stability and fast response time. Key ...
![2-methyl-4-[4-[4-(3-methyl-4-phenylphenyl)phenyl]phenyl]-1-phenylbenzene Structure](https://image.chemsrc.com/caspic/233/120956-76-5.png)
