中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | benzyl 4-(benzyloxy)-2-methyl-3-oxobutanoate | 214333-77-4 | C19H20O4 | 312.365 |
4-(苄氧基)-3-氧代丁酸乙酯 | ethyl 4-benzyloxyacetoacetate | 67354-34-1 | C13H16O4 | 236.268 |
—— | benzyl 4-(benzyloxy)-3-oxobutanoate | 61795-51-5 | C18H18O4 | 298.339 |
Fused systems are formed preferentially, under standard conditions, but spiro systems are accessible only when the formation of the fused system is blocked and with careful optimisation of reaction conditions.