申请人:Tessenderlo Chemie S.A.
公开号:EP1256572A1
公开(公告)日:2002-11-13
The present invention relates to a method for the preparation of a compound of the general formula (I) wherein
R1 and R2 each represent independently hydrogen, halogen, hydroxy, thiol, nitro, amino, carboxy, amino derivative, oxy derivative, thio derivative, alkyl, alkenyl, alkynyl, aryl, oxy derivative, amino derivative, thiol derivative, acyl derivative, acyloxy derivative, ester, amido, ether, arylalkyl, heterocycle or Me(OR')CH wherein R' is hydrogen or RaRbRcSi wherein Ra, Rb and Rc is independently chosen from the group consisting of alkyl, alkenyl, alkynyl, aryl or a heterocycle;
R3 represents a protecting group such as alkyl, alkenyl, alkynyl, or arylalkyl;
wherein this method comprises the reaction of a compound of the general formula (II) in the presence of a halogen-radical source, water and a proton donor suitable as a catalyst.
本发明涉及一种通式(I)化合物的制备方法,其中
R1和R2各自独立地代表氢、卤素、羟基、硫醇、硝基、氨基、羧基、氨基衍生物、氧衍生物、硫衍生物、烷基、烯基、炔基、芳基、氧衍生物、氨基衍生物、硫醇衍生物、酰基衍生物、酰氧基衍生物、酯、氨基、醚、芳烷基、杂环或Me、酯、氨基、醚、芳烷基、杂环或 Me(OR')CH 其中 R' 为氢或 RaRbRcSi 其中 Ra、Rb 和 Rc 独立选自烷基、烯基、炔基、芳基或杂环组成的组;
R3 代表保护基团,如烷基、烯基、炔基或芳烷基;
其中,该方法包括通式(II)化合物在卤代放射源、水和适合作为催化剂的质子供体存在下进行反应。