[EN] SYNTHESIS OF TRIS N-ALKYLATED 1,4,7,10-TETRAAZACYCLODODECANES<br/>[FR] SYNTHESE DE 1,4,7,10-TETRAAZA-CYCLODODECANES TRIS N-ALKYLES
申请人:UNIV HONG KONG
公开号:WO2005003105A1
公开(公告)日:2005-01-13
A directly synthetic method for preparing tris-alkylated 1,4,7,10-tetraazacyclododecanes by the reactions of 1,4,7,10-tetraazacyclododecane (cyclen) and appropriate electrophiles is accomplished in high yield. The method provides operational convenience, starting material availability, cost economy, atom efficiency and reaction insensitivity to temperature, moisture, and concentrations of starting materials. With this method, the yield of tris-(tert-butoxycarbonylmethyl)-1,4,7,10-tetraazacyclododecane can be 77%, the highest reported. The yield of other tris-N alkylated products can be in the range of 65-84%.
通过对1,4,7,10-四氮杂环十二烷(cyclen)和适当的亲电试剂反应,实现了一种直接合成三烷基化1,4,7,10-四氮杂环十二烷的方法,收率高。该方法提供操作方便、起始物质易得、成本经济、原子效率高,且对温度、湿度和起始物质浓度的反应不敏感。利用这种方法,三-(叔丁氧羰基甲基)-1,4,7,10-四氮杂环十二烷的产率可达77%,为目前报道的最高。其他三N烷基化产物的产率可在65-84%的范围内。