作者:C.W. Buss、P.L. Coe、J.C. Tatlow
DOI:10.1016/s0022-1139(00)81929-6
日期:1986.11
4-nitrophenylacetic acid. The acid chloride and ethyl malonate/butyl lithium afforded ethyl 4-(4′-nitrophenyl)-3- oxobutanoate, of which the 3-oxo-function was converted to CF2 by sulphur tetrafluoride/hydrogen fluoride at room temperature. The nitro-group was reduced to amino, which was alkylated to bis(hydroxy- ethyl) amino using oxirane in acetic acid. Conversion to bis(chloro- ethyl) amino was by carbon tetrachl
抗癌药苯丁酸氮芥的二氟衍生物是由4-硝基苯乙酸分七个步骤制得的。酰氯和丙二酸乙酯/丁基锂提供了4-(4'-硝基苯基)-3-氧代丁酸乙酯,其3-氧代官能团在室温下被四氟化硫/氟化氢转化为CF 2。将硝基还原为氨基,然后使用环氧乙烷在乙酸中将其烷基化为双(羟乙基)氨基。通过四氯化碳/三苯基膦转化为双(氯乙基)氨基。然后用盐酸水解酯基,得到目标产物:4- [4'-双(2″-氯乙基)氨基苯基] -3,3-二氟丁酸(3,3-二氟氯丁酸)。还尝试了其他不成功的方法。