申请人:Ube Industries, Ltd.
公开号:US04638094A1
公开(公告)日:1987-01-20
A phenylacetone or its derivative having the general formula (I): ##STR1## wherein X, Y, and Z are independently a hydrogen atom, a hydroxyl group, a halogen atom, a nitro group, an amino group, a lower alkyl group having 1 to 6 carbon atoms, a lower alkoxy group having 1 to 6 carbon atoms, or a benzyloxy group and any two substituents of X, Y, and Z may form, together with the benzene ring, a heterocycling ring having 5 to 7 members including 1 or 2 oxygen atoms is produced at a high yield and a high selectivity by reacting a 3-phenylpropylene or its derivative having the general formula (II): ##STR2## wherein X, Y, and Z are as defined above, with an alkyl nitrite having the general formula (III): RONO (III) wherein R is an aliphatic, aromatic, or alicyclic saturated or unsaturated hydrocarbon group in the presence of (a) water, (b) an alcohol, (c) a palladium catalyst, and (d) an optional amine or copper compound, or by reacting the above-mentioned 3-phenylpropylene or its derivative with the above-mentioned alkyl nitrite in the presence of (a) an alcohol, (b) a palladium catalyst and (c) an optional amine or copper compound to form 1-phenyl-2,2-dialkoxypropane or it derivative having the general formula (IV): ##STR3## wherein X, Y, Z and R are as defined above, followed by hydrolyzing the reaction product.
一个苯基丙酮或其衍生物,具有一般式(I):其中X、Y和Z分别是氢原子、羟基、卤原子、硝基、氨基、具有1至6个碳原子的低碳烷基、具有1至6个碳原子的低烷氧基或苄氧基,X、Y和Z中的任意两个取代基与苯环一起可以形成含有1或2个氧原子的5至7个成员的杂环环,通过将具有一般式(II)的3-苯基丙烯或其衍生物进行反应,其中X、Y和Z如上所定义,与具有一般式(III)的烷基亚硝酸酯反应,在(a)水,(b)醇,(c)钯催化剂和(d)可选胺或铜化合物的存在下,以高产率和高选择性产生,或通过将上述3-苯基丙烯或其衍生物与上述烷基亚硝酸酯在(a)醇,(b)钯催化剂和(c)可选胺或铜化合物的存在下反应,形成具有一般式(IV)的1-苯基-2,2-二烷氧基丙烷或其衍生物:其中X、Y、Z和R如上定义,然后水解反应产物。