Preparation method of 2-methylcyclopentadecanon
The invention discloses a preparation method of 2-methylcyclopentadecanon. The method comprises the following steps: cyclizing a raw material dimethyl pentadecanedioate, adding a thiophenylmethylene group, dehydroxylating, and removing athiophenyl group to obtain 2-methylcyclopentadecanon. The raw m...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a preparation method of 2-methylcyclopentadecanon. The method comprises the following steps: cyclizing a raw material dimethyl pentadecanedioate, adding a thiophenylmethylene group, dehydroxylating, and removing athiophenyl group to obtain 2-methylcyclopentadecanon. The raw material can be industrially produced and easily obtained. The method using cheap methyl phenylthio acetate to carry out a methylation reaction avoids the difficult industrial production of a methyl Grignard reaction, the method not using expensive iodide or bromide saves the cost and also avoids the use of ether solvents with production safety problems, and the method also has the advantages of milder reaction condition and easy industrialization. |
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