以CaH2为缚酸剂,DMF为溶剂,金鸡纳生物碱通过3,6-二氯哒嗪或1,4-二氯-2,3-二氮杂萘桥连,高产率地合成了用作手性配体的13个金鸡纳生物碱衍生物,其结构经NMR确证。
Thirteen cinchona alkaloid derivatives as chiral ligand were synthesized from cinchona alkaloid using 3,6-dichloro-pyridazine or 1,4-dichloro-2,3-phthalazone as bridged reagent in the presence of CaH2 in DMF under mild condition. The structures were confirmed by NMR.