申请人:Merck, Sharp & Dohme, Ltd.
公开号:US05567819A1
公开(公告)日:1996-10-22
A process for preparing tryptamine derivatives and related compounds having a 1,2,4-triazol-1-yl moiety within the molecule comprises reacting 4-amino-1,2,4-triazol with a nitrobenzene derivative containing a readily displaceable group; deaminating the aminotriazolium salt thereby obtained by treatment with nitrous acid followed by neutralisation; reducing the triazolyl-nitrobenzene derivative thereby obtained by transfer hydrogenation; treating the triazolyl-aniline derivative thereby obtained with nitrous acid and then with an alkali metal sulphate, followed by acidification; and subsequently reacting the triazolyl-hydrazine derivative thereby obtained in situ with a suitable carbonyl compound, to obtain the required triazolyl-indole derivative.
制备具有分子内1,2,4-三唑-1-基的色胺衍生物及相关化合物的方法包括:将4-氨基-1,2,4-三唑与含有易于取代的基团的硝基苯衍生物反应;通过用亚硝酸处理然后中和,对由此得到的氨基三唑盐进行脱氨;通过转移氢化还原得到的 三唑基-硝基苯衍生物;用亚硝酸然后是无机硫酸盐处理得到的 三唑基-苯胺衍生物,然后酸化;随后将得到的 三唑基-肼衍生物原位与合适的羰基化合物反应,以获得所需的 三唑基-吲哚衍生物。