发明名称 |
2,2-Dialkyltetrahydropyrans |
摘要 |
By treating a primary or secondary alkenol having an olefinic bond in the sixth position relative to the carbon atom carrying the hydroxyl group and at least one methyl group in the fifth position relative to said carbon atom with a strong acid (e.g., 85 percent phosphoric acid), 2,2-dialkyltetrahydropyrans are produced via a cyclization reaction. The products have desirable fragrance characteristics.
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申请公布号 |
US4254038(A) |
申请公布日期 |
1981.03.03 |
申请号 |
US19790088289 |
申请日期 |
1979.10.26 |
申请人 |
ETHYL CORPORATION |
发明人 |
SHEPHERD, JR., LAWRENCE H. |
分类号 |
C07D309/04;C11B9/00;(IPC1-7):C07D309/04 |
主分类号 |
C07D309/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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