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Communication
Org. Biomol. Chem., 2006, 4, 4059 - 4062, DOI: 10.1039/b612776m
Photochemical preparation of pyrrole ring-contracted chlorins by the Wolff rearrangement
Tillmann Köpke, Maren Pink and Jeffrey M. Zaleski
Photolysis of the Ni(II), Cu(II), and Zn(II) 2-diazo-3-oxochlorins generates 4-membered rings containing azeteoporphyrins.

