申请人:Shiomi Yasuhiro
公开号:US20050124807A1
公开(公告)日:2005-06-09
The present invention provides a process for preparing a heterocyclic aldehyde by oxidizing a heterocyclic alcohol with high selectivity and high yield. Specifically, the heterocyclic aldehyde is prepared by reacting a heterocyclic compound having at least one hydroxymethyl group bonded to a carbon atom of a heterocyclic ring with a hypohalogenous acid salt in the presence of a base to oxidize the hydroxymethyl group, wherein reaction is conducted in the co-presence of a 2,2,6,6-tetramethylpiperidine-1-oxyl derivative having at least two 2,2,6,6-tetramethylpiperidine-1-oxyl-4-yl groups.
本发明提供了一种通过氧化具有高选择性和高产率的杂环醇来制备杂环醛的方法。具体来说,通过将至少有一个羟甲基基团与杂环环的碳原子键合的杂环化合物与次氯酸盐在碱的存在下反应,氧化羟甲基基团来制备杂环醛,其中反应在共存至少具有两个2,2,6,6-四甲基哌啶-1-氧基-4-基团的2,2,6,6-四甲基哌啶-1-氧基-4-基团的2,2,6,6-四甲基哌啶-1-氧基-4-基团的共存下进行。