Suitable hydroxy-protecting groups are ether-forming groups that can be removed easily after completion of all other reaction steps.
任意基团在反应步骤完成后可以很容易地除去的基团都适合做羟基保护基团。
2
As an effective protection for hydroxy group in alcohols and phenols, the methods for the formation of tetrahydropyran ether and its cleavage employed in the last 15 years are reviewed.