tert-butyl 1-((3-(4-cyano-2,6-dimethylheptan-4-yl)-4-methoxyphenyl)sulfonyl)spiro[indoline-3,4'-piperidine]-1'-carboxylate 、
丙烯酸乙酯 在
silver(I) acetate 、 palladium diacetate 、
N-乙酰甘氨酸 作用下,
反应 24.0h,
以82%的产率得到(E)-tert-butyl 1-((3-(4-cyano-2,6-dimethylheptan-4-yl)-4-methoxyphenyl)sulfonyl)-6-(3-ethoxy-3-oxoprop-1-en-1-yl)spiro[indoline-3,4'-piperidine]-1'-carboxylate