Trifluoro- and trichloroacetamides serving as pronucleophiles undergo enantioselective Lewis base catalyzed N-allylation with Morita-Baylis-Hillman carbonates to produce enantioenriched β-amino acid derivatives and highly enantioenriched allylic carbonates through a kinetic resolution. The obtained products are used to produce a library of spiro-isoxazoline lactams via deprotection - cyclization -
作为亲核试剂的三
氟乙酰胺和三
氯乙酰胺与 Morita-Baylis-Hillman
碳酸酯进行对映选择性路易斯碱催化的 N-烯丙基化,通过动力学拆分产生对映体富集的 β-
氨基酸衍
生物和高度对映体富集的烯丙
碳酸酯。获得的产物用于通过脱保护-环化-非对映选择性环加成序列生产螺
异恶唑啉内酰胺文库。