A new method for synthesizing fluorinated open chain β-enamino ketones and cyclic β-enamino diketones using perfluoroalkanoyl fluorides and ketimines
作者:Jan Przyborowski、Enno Lork、Gerd-Volker Röschenthaler
DOI:10.1016/s0022-1139(00)00245-1
日期:2000.7
molecular structures of one open chain and two cyclic compounds in the solid state reveal short intramolecular N(H)⋯OC distances and considerable electron delocalisation in the β-enamino fragments. In the NMR spectra of 1-benzylidene-3,3,4,4-tetrafluorocyclopentane-2,5-dione, a two step temperature dependent dynamic process was proposed, causing an AA′BB′ system.
2-异丙基亚氨基丙烷与全氟丙酸和全氟丁酸氟化物反应生成相应的5-amino-1,1,1,2,2-五氟己基-4-en-3-one和5-amino-1,1,1,2,2 ,3,3-七氟庚-5-烯-4-酮,而2-异丙基亚氨基丙烷或2-异丙基亚氨基-2-苯基乙烷与四氟琥珀酸和八氟己二酸二氟化物以2:1的比例产生相应的2,9-双氨基-5, 5,6,6-tetrafluorodeca-2,8-dien-4,7-dione,1,8-bisamino-1,8-diphenyl-4,4,5,5-tetrafluoroocta-1,7-dien-3, 6-二酮,2,11-二氨基-5,5,6,6,7,7,8,8-八氟十二碳-2,10-dien-4,9-二酮和1,10-二氨基-1,10 -二苯基-4,4,5,5,6,6,7,7-八氟癸基-1,9-dien-3,8-dione。令人惊讶的将化学计量比更改为1:1,氟化的1'-异丙基氨基取代的1-亚乙基-3