... Page 2. 3408 J. Org. Chem., Vol. 58, No. 12, 1993 ... (5) For a discussion of permutation pattern analysis in aromatic phototransposition chemistry and in five-membered heteroaromatic phototransposition chemistry see: Barltrop, J. A,; Day, A. C. J. Chem. SOC., Chem. Commun. ...
