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作 者:郭生金[1] 罗奎[2] 兰静波[2] 谢如刚[2]
机构地区:[1]晋中学院,山西榆次030600 [2]四川大学化学系,成都610064
出 处:《晋中学院学报》2006年第6期1-3,共3页Journal of Jinzhong University
摘 要:本文以L—氨基酸为手性源,在文献[8]的基础上进一步合成了几种含有多个手性中心的手性咪唑(鎓))环蕃,并进行了结构表征.在碱性条件下,L—氨基酸和乙二醛、甲醛经过缩合反应生成(S)-2-(咪唑-1-基)羧酸钠,进一步酯化为甲酯后继与丙二胺经过胺解反应制得开链手性双咪唑二酰胺.开链手性双咪唑丙二酰胺与二溴化物在高稀技术和无水条件下季铵化,制得了目标分子.The Sodium (S)- 2- (1- imidazolyl) alkanoic acids were prepared by cohydendensation reaction ot natural amino acids with formaldehyde water solution and glyoxal water solution under basic condition. The sodium salts react with methyl alcohol to form (S) - 2- (1 - imidazolyl) alkanoates The (S) - 2 - ( 1 - imidazolyl) alkamides were obtained directly by amidolysis of the (S) - 2- ( 1 - irnidazolyl )alkanoates with biamine. The products(5-7) were synthesized by direct quaternization of the compounds (4) with 2,6- bis(bromomethyl) - 4- chlorphenol, 1,3- bis (bromomethyl) benzene or 2,6- bis(bromomethyl) pyridine under high dilution and anhydrous condition. Finally, the structures of the target compounds were confirmed by IR, 1HNMR, MS, HRMS, and elemental analysis.
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