Synthesis and study of aza[7]helicene and aza[9]helicene is presented in this paper. Photo-dehydrocyclization of the 3,6-bis-styryl derivative of carbazole leading to sterically less demanding aza[7
We have found that direct photolysis of vinyldiazo compounds selectively leads to cyclopropenes, which contrasts with the same reactions under thermal conditions that favors the formation of pyrazoles
Pathways involving possible conical intersections and radicaloid intermediates on the potential energy surface for the photocycloaddition of ethene to benzene have been studied using CASSCF geometry o
The regio- and stereoselectivity of intramolecular [2 + 2] photocycloadditions of 2‘-hydroxyenones are shown to be solvent-dependent. In the presence of aprotic solvents, 2‘-hydroxyenones undergo phot
Arylated butadienes were prepared employing transition-metal coupling techniques and characterized via UV/vis spectroscopy and X-ray crystal structure analysis. Identification of byproducts led to a p