2-Bromo-2-methyl-propionic acid 2-{4-[2-(tetrahydro-pyran-2-yloxy)-ethoxymethyl]-phenyl}-2-(2,2,6,6-tetramethyl-piperidin-1-yloxy)-ethyl ester 在
Amberlist 15 作用下,
以
甲醇 为溶剂,
以65.8%的产率得到2-[4-(2-oxa-4-hydroxybutyl)phenyl]-1-(2,2,6,6,-tetramethyl-1-piperidinyloxy)ethyl 2-bromo-2-methylpropionate