- Preparation method and application of Grignard reagent
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The invention relates to a preparation method and application of a Grignard reagent, the Grignard reagent is obtained by treating a halide with a structural formula as a raw material with magnesium inan organic solvent, X is a halogen atom and is selected from Cl, Br and I, R2 is an alkyl or aryl group containing 2-9 carbon atoms. The Grignard reagent is mainly applied to a synthetic process of dimopidol and hydrochloride thereof, and is used for introducing an alkyl side chain. The whole synthetic process of dimopidol and hydrochloride thereof is safe and efficient, each step of reaction operation is simple and safe, and the reaction yield is high so that industrial production can be realized.
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Paragraph 0074; 0075
(2020/12/29)
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- METHOD FOR THE MANUFACTURING OF DELMOPINOL INTERMEDIATES
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The present invention relates to a new process for producing intermediates useful in the manufacture of 2-(3-(4-propylheptyl)morpholino)ethan-l-ol. The invention also relates to intermediates l-chloro-4-propylhept-3-ene and l-iodo-4-propylhept-3-ene.
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- METHOD FOR THE MANUFACTURING OF 2-(3-(ALKYL AND ALKENYL)MORPHOLINO)-ETHAN-1-OLS
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The present invention relates to a method for the manufacture of 2-(3-(alkyl or alkenyl)morpholino)-ethan-1-ols by reduction of 8a-(alkyl and alkenyl)hexahydrooxazolo[2,3-c][1,4]oxazines encompassing a process for producing 2-(3-(4-propylheptyl)morpholino)ethan-1-ol with the INN name delmopinol. The invention also relates to 1-chloro-4-propylhept-3-ene, 1-iodo-4-propylhept-3-ene, 8a-(4-5 propylheptyl)hexahydrooxazolo[2,3-c][1,4]oxazine, 8a-(4-propylhept-3-en-1-yl)hexahydrooxazolo[2,3-c][1,4]oxazine and 2-(3-(4-propylhept-3-en-1-yl)morpholino)ethan-1-ol which are intermediates in the delmopinol process.
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Page/Page column 28
(2018/07/29)
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