(S)-methyl 2-(6-amino-2,3-dihydrobenzofuran-3-yl)acetate 、
3-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)-2,4-dimethylbenzaldehyde 在
三乙酰氧基硼氢化钠 、
溶剂黄146 作用下,
以
乙腈 为溶剂,
反应 4.0h,
以52%的产率得到methyl [(3S)-6-{[3-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)-2,4-dimethylbenzyl]amino}-2,3-dihydro-1-benzofuran-3-yl]acetate