论文部分内容阅读
[4+4] and [4+2] photocycloadditions have not computationally attracted the same level of attention as [2+2] photocycloadditions.Herein we have employed density-functional theory(DFT),complete active-space self-consistent field(CASSCF),and its multi-state second-order perturbation theory(MSCASPT2) methods to systematically explore excited-state intramolecular proton transfer(ESIPT) induced [4+4] and [4+2] photocycloaddition mechanisms of an oxazoline.