申请人:Interx Research Corporation
公开号:US04009178A1
公开(公告)日:1977-02-22
There is provided a brominating and oxidizing agent of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, represents a member selected from the group consisting of a hydrogen atom, a C.sub.1 -C.sub.22 straight or branched alkyl group, a phenyl group, and a substituted phenyl group whose substituents are selected from the group consisting of a methoxy group, a nitro group, a cyano group, a halogen atom (Br, Cl, I), a C.sub.1 -C.sub.2 dialkylamino group, a C.sub.1 -C.sub.2 dialkylaminomethyl group, a C.sub.1 -C.sub.2 dialkylaminoethyl group, a C.sub.1 -C.sub.2 dialkylammoniummethyl group, a C.sub.1 -C.sub.2 dialkylammoniumethyl group, a C.sub.1 -C.sub.2 trialkylammoniummethyl group, a C.sub.1 -C.sub.2 trialkylammoniumethyl group, a COOR.sub.5 group, and a CON(R.sub.5).sub.2 group, wherein R.sub.5 represents a C.sub.1 -C.sub.8 straight or branched alkyl group. The compounds falling within formula (I) find wide application as brominating and oxidizing agents in a number of organic reactions in which the prior art compound, N-bromosuccinimide has been employed to date. In comparison to N-bromosuccinimide, the compounds of the instant invention are characterized as being extremely stable to degradation and less polar with respect to their N-Br bond than N-bromosuccinimide such that promotion of "radical" bromine release is achieved with minimal positive bromine release.
提供一种溴化和氧化剂,其化学式为:##STR1## 其中R.sub.1、R.sub.2、R.sub.3和R.sub.4可以相同也可以不同,代表所选自群组的成员,包括氢原子、C.sub.1-C.sub.22直链或支链烷基、苯基和取代苯基,其取代基选自群组,包括甲氧基、硝基、氰基、卤原子(溴、氯、碘)、C.sub.1-C.sub.2二烷基氨基、C.sub.1-C.sub.2二烷基氨甲基、C.sub.1-C.sub.2二烷基氨乙基、C.sub.1-C.sub.2二烷基铵甲基、C.sub.1-C.sub.2二烷基铵乙基、C.sub.1-C.sub.2三烷基铵甲基、C.sub.1-C.sub.2三烷基铵乙基、COOR.sub.5基团和CON(R.sub.5).sub.2基团,其中R.sub.5代表C.sub.1-C.sub.8直链或支链烷基。符合式(I)的化合物在许多有机反应中作为溴化和氧化剂广泛应用,其中迄今为止已经使用的先前技术化合物N-溴代琥珀酰亚胺。与N-溴代琥珀酰亚胺相比,本发明的化合物具有极高的稳定性和较低的极性,其N-Br键相对于N-溴代琥珀酰亚胺来说,促进“自由基”溴释放的效果更好,溴释放量极小。