New synthetic route to substituted dihydroazulene photoswitches
作者:Louise Skov、Michael Åxman Petersen、Søren Lindbæk Broman、Andrew D. Bond、Mogens Brøndsted Nielsen
DOI:10.1039/c1ob06059g
日期:——
A new procedure for functionalization of the dihydroazulene photoswitch on its seven-memberedring was developed, which has allowed isolation of the firstdihydroazulene with a phenyl substituent at position 5 from a mixture of regioisomers. Light-induced ring-opening to the corresponding vinylheptafulvene and the thermal back-reaction was studied in detail.