作者:Denis Sinou、Jerome Bayardon
DOI:10.1055/s-2004-834953
日期:——
Enantiopure fluorous 1,2-diphenyl-1,2-ethanediamine bearing four fluorous ponytails and having 62.2% fluorine content has been prepared. Resolution of racemic 1,2-bis(3,5-dimethoxyphenyl)ethane-1,2-diamine with (-)-menthyl chloroformate followed by reduction of the obtained carbamate afforded the corresponding enantiopure secondary diamines. Protection of the amino function as an aminal, followed by the cleavage of the methoxy moiety and then the introduction of the four fluorous ponytails gave after hydrolysis the enantiopure fluorous 1,2-diphenyl-1,2-ethanediamine.
制备了带有四个氟马尾辫、氟含量为62.2%的对映体纯氟1,2-二苯基-1,2-乙二胺。用(-)-氯甲酸薄荷酯拆分外消旋1,2-双(3,5-二甲氧基苯基)乙烷-1,2-二胺,然后还原所得氨基甲酸酯,得到相应的对映体纯仲二胺。将氨基官能团保护为缩醛胺,然后裂解甲氧基部分,然后引入四个含氟马尾辫,水解后得到对映体纯含氟1,2-二苯基-1,2-乙二胺。