"Xu Chen,Tsuyoshi Michinobu","Synthesis of Nonplanar Push-Pull Chromophores with Various Heterocyclic Moieties via [2 + 2] Cycloaddition-Retroelectrocyclization Reaction",,"J. Org. Chem.","American Chemical Society","Vol. 90","No. 4","pp. 1561-1570",2025,Jan.