The present invention relates to a method of protecting a hydroxyl group, which includes reacting a hydroxyl group-containing compound with a compound represented by the formula (I):
wherein R is a phenyl group optionally having substituent(s), an alkyl group optionally having substituent(s) or a benzyl group optionally having substituent(s), and X is a halogen atom, in the presence of an acid catalyst to substitute the hydrogen atom of the hydroxyl group of the hydroxyl group-containing compound with a protecting group represented by the formula (II):
wherein R is as defined above. The present invention provides a method capable of introducing an acetal type protecting group into a hydroxyl group under mild conditions, and a protecting reagent therefor and a method of producing the protecting reagent.
本发明涉及一种保护羟基的方法,包括将含有羟基的化合物与式(I)表示的化合物在酸催化剂存在下反应,其中R是一个苯基,可选地具有取代基,一种烷基,可选地具有取代基,或一种苄基,可选地具有取代基,X是一个卤素原子,以用式(II)表示的保护基替换羟基化合物的氢原子。本发明提供了一种能够在温和条件下引入
缩醛型保护基到羟基的方法,以及该保护试剂和生产该保护试剂的方法。