6-<<(tert-butyl)dimethylsilyl>oxy>-3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran 、 2-(4-methyl-3-oxo-3,4-dihydroquinoxalin-2-yl)-4-phenylbutane-1-sulfonyl fluoride 在
2-叔丁基-1,1,3,3-四甲基胍 作用下,
以
乙腈 为溶剂,
以47 %的产率得到(S)-2,5,7,8-tetramethyl-2-((4S,8S)-4,8,12-trimethyltridecyl)chroman-6-yl 2-(4-methyl-3-oxo-3,4-dihydroquinoxalin-2-yl)-4-phenylbutane-1-sulfonate