Template directed photodimerization of trans-1,2-bis(n-pyridyl)ethylenes and stilbazoles in water
作者:Mahesh Pattabiraman、Arunkumar Natarajan、Raja Kaliappan、Joel T. Mague、V. Ramamurthy
DOI:10.1039/b508458j
日期:——
Template induced photodimerization of trans-1,2-bis(n-pyridyl)ethylene dihydrochlorides and trans-n-stilbazole hydrochlorides within cucurbit[8]uril in aqueous media leads to high yields of the syn dimer.
Direct C–H fluorination is an efficient strategy to construct aromatic C–F bonds, but the cleavage of specific C–Hbonds in the presence of other functional groups and the high barrier of C–F bond formation make the transformation challenging. Progress for the electrophilic fluorination of arenes has been reported, but a similar transformation for electron-deficient azaarenes has remained elusive due