ethyl 3-(1-oxo-3,4-dihydronaphthalen-2(1H)-ylidene)propanoate 、 2-Oxo-Δ
3-hexen-saeureethylester 在
三乙烯二胺 作用下,
以
1,4-二氧六环 为溶剂,
反应 24.0h,
以74%的产率得到3,6-diethyl 6-hydroxy-1'-oxo-4-propyl-3',4'-dihydro-1'H-spiro[cyclohex-2-ene-1,2'-naphthalene]-3,6-di-carboxylate