St_1e 、
N-(benzylidene)aniline N-oxide 在
C
37H
28O
2P
2*Au
2Cl
2 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
生成 (1RS,4SR)-1-butyl-7-methyl-3,4,5-triphenyl-3,4-dihydro-1H-furo[3,4-d][1,2]oxazine 、
(1S,4R)-1-butyl-7-methyl-3,4,5-triphenyl-3,4-dihydro-1H-furo[3,4-d][1,2]oxazine