异脱氢乙酸乙酯
异脱氢乙酸乙酯结构式
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常用名 | 异脱氢乙酸乙酯 | 英文名 | 5-Carbethoxy-4,6-dimethyl-2-pyrone |
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| CAS号 | 3385-34-0 | 分子量 | 196.20000 | |
| 密度 | 1.167 g/mL at 25 °C(lit.) | 沸点 | 290-295 °C(lit.) | |
| 分子式 | C10H12O4 | 熔点 | 17-18 °C(lit.) | |
| MSDS | 美版 | 闪点 | >230 °F |
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A convenient preparation of the side-chain lactone ring of a withanolide precursor.
Steroids 54(3) , 313-20, (1989) Condensation of C22 and C21 steroidal aldehydes with ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate 1 in alkaline medium, followed by decarboxylation, provides a simple route to the alpha, beta-unsaturated side-chain delta-lactone synthesis for a classical w... |
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