申请人:Zeneca Limited
公开号:US05703246A1
公开(公告)日:1997-12-30
A process for the preparation of an oxirane, aziridine or cyclopropane of formula (I) wherein, X is oxygen, NR.sup.4 or CHR.sup.5 ; R.sup.1 is hydrogen, alkyl, aryl, heteroaromatic, heterocyclic or cycloalkyl; R.sup.2 is hydrogen, alkyl, aryl, heteroaromatic, CO.sub.2 R.sup.8, CHR.sup.14 NHR.sup.13, heterocyclic or cycloalkyl; or R.sup.1 and R.sup.2 join together to form a cycloalkyl ring; R.sup.3 is hydrogen, alkyl, aryl, heteroaromatic, CO.sub.2 R.sup.8, R.sup.8.sub.3 Sn, CONR.sup.8 R.sup.9 or trimethylsilyl; R.sup.4 and R.sup.5 are, independently, alkyl, cycloalkyl, aryl, heteroaromatic, SO.sub.2 R.sup.8, SO.sub.3 R.sup.8, COR.sup.8, CO.sub.2 R.sup.8, CONR.sup.8 R.sup.9 or CN, or R.sup.4 can also be P(O)(aryl).sub.2 ; R.sup.8 and R.sup.9 are independently alkyl, aryl or arylalkyl; R.sup.13 and R.sup.14 are independently hydrogen, alkyl or aryl; the process comprising reacting a mixture of a compound of formula (II), wherein R.sup.1, R.sup.2 and X are as defined above, and a sulphide of formula SR.sup.6 R.sup.7, wherein R.sup.6 and R.sup.7 are independently alkyl, aryl or heteroaomatic, or R.sup.6 and R.sup.7 join together to form a cycloalkyl ring which optionally includes an additional heteroatom, with either (i) a metallocarbon obtainable by reacting an alkylmetal with a methane derivative of formula CHR.sup.3 X'X", wherein R.sup.3 is as defined above, and X' and X" are independently, a leaving group, or (ii) a metallocarbon obtainable by reacting a compound of formula (III), (wherein R.sup.3 may not be hydrogen) with a suitable organometallic or inorganic reagent.
一种制备式(I)的环氧烷、氮杂环丙烷或环丙烷的方法,其中,X为氧、NR^4或CHR^5;R^1为氢、烷基、芳基、杂环芳基、杂环烷基或环烷基;R^2为氢、烷基、芳基、杂环芳基、CO_2R^8、CHR^14NHR^13、杂环烷基或环烷基;或R^1和R^2结合形成环烷基环;R^3为氢、烷基、芳基、杂环芳基、CO_2R^8、R^83Sn、CONR^8R^9或三甲基硅基;R^4和R^5分别为烷基、环烷基、芳基、杂环芳基、SO_2R^8、SO_3R^8、COR^8、CO_2R^8、CONR^8R^9或CN,或R^4也可以是P(O)(芳基)_2;R^8和R^9独立地为烷基、芳基或芳基烷基;R^13和R^14独立地为氢、烷基或芳基;该方法包括将式(II)化合物的混合物与式SR^6R^7的硫化物反应,其中R^1、R^2和X如上所定义,R^6和R^7独立地为烷基、芳基或杂环芳基,或R^6和R^7结合形成环烷基环,该环可能包括额外的杂原子,与(i)通过将烷基金属与式CHR^3X'X"的甲烷衍生物反应获得的金属碳或(ii)通过将式(III)化合物(其中R^3可能不是氢)与适当的有机金属或无机试剂反应获得的金属碳反应。