(2,2,6,6-tetramethyl-1-oxopiperidin-1-ium-4-yl) N-[4-[[4-[(2,2,6,6-tetramethyl-1-oxidopiperidin-4-yl)oxycarbonylamino]phenyl]methyl]phenyl]carbamate 在
9,10-二氢蒽 作用下,
以
甲苯 为溶剂,
以100%的产率得到(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) N-[4-[[4-[(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl)oxycarbonylamino]phenyl]methyl]phenyl]carbamate