tert-butyl (2-(1-methyl-1H-indol-3-yl)ethyl)carbamate 、
α-chloro-N-benzoylhydrazone 在
tetrakis(acetonitrile)copper(I)tetrafluoroborate 、 (S,Sp)-
tBu-phosferrox 、
sodium carbonate 作用下,
以
二氯甲烷 为溶剂,
以88%的产率得到tert-butyl (2-((4aS,9aS)-1-benzoyl-9-methyl-3-phenyl-4,4a,9,9a-tetrahydro-1H-pyridazino[3,4-b]indol-4a-yl)ethyl)carbamate