(+/-)-(2-adamantyl)7-bromo-3-(2-ethoxy-2-oxoethyl)-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate 生成 (2-adamantyl)7-bromo-3-(2-ethoxy-2-oxoethyl)-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate 、 (2-adamantyl)7-bromo-3-(2-ethoxy-2-oxoethyl)-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate