Allyl esters substituted by a difluoromethylene group, their process of synthesis and their use, and a process for functionalizing a double bond
申请人:RHODIA CHIMIE
公开号:US20040147789A1
公开(公告)日:2004-07-29
This invention provides compounds of formula:
1
in which R
f
is a radical that carries a perfluoromethylene group, which group ensures bonding to the remainder of the molecule; R1 and R3, which can be the same or different, are chosen from among hydrogen and alkyl or aryl radicals; &PSgr; is an electroattractor group such that &PSgr;-O—H is an acid whose pKa (in water) is at most equal to 8, advantageously 6, and preferably 5. These compounds are useful for the synthesis of nitrogen-containing heterocyclic compounds.
这项发明提供了以下式的化合物:1其中Rf是携带全氟亚甲基基团的基团,该基团确保与分子的其余部分结合;R1和R3,可以相同也可以不同,选择自氢和烷基或芳基基团;Ψ是一种电子吸引基团,使Ψ-O—H是一个酸,其pKa(在水中)最多等于8,优选6,更优选5。这些化合物对于合成含氮杂环化合物很有用。