RU92004413A - ADVANCED METHOD FOR OBTAINING DIHYDROPYRIDINDICARBOXYLATES - Google Patents

ADVANCED METHOD FOR OBTAINING DIHYDROPYRIDINDICARBOXYLATES

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Publication number
RU92004413A
RU92004413A RU92004413/04A RU92004413A RU92004413A RU 92004413 A RU92004413 A RU 92004413A RU 92004413/04 A RU92004413/04 A RU 92004413/04A RU 92004413 A RU92004413 A RU 92004413A RU 92004413 A RU92004413 A RU 92004413A
Authority
RU
Russia
Prior art keywords
dihydropyridindicarboxylates
obtaining
advanced method
trifluoromethyl
bis
Prior art date
Application number
RU92004413/04A
Other languages
Russian (ru)
Inventor
Гарольд Миллер Вилльям
Original Assignee
Монсанто Компани
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Монсанто Компани filed Critical Монсанто Компани
Publication of RU92004413A publication Critical patent/RU92004413A/en

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Claims (1)

Предложен улучшенный способ дегидратации диалкиловых эфиров 2,6-бис-(трифторметил)-2,6-дигидрокси-4-(алкил)-3,5-пеперидиндикарбоновых кислот с использованием концентрированной серной кислоты по существу в отсутствие растворителя для получения соответствующих диалкиловых эфиров 2,6-бис(трифторметил)-дигидро-4-(алкил)-3,5-пиридинкарбоновых кислот.An improved method for the dehydration of dialkyl ethers of 2,6-bis- (trifluoromethyl) -2,6-dihydroxy-4- (alkyl) -3,5-peperidinedicarboxylic acids using concentrated sulfuric acid essentially in the absence of a solvent to obtain the corresponding dialkyl ethers , 6-bis (trifluoromethyl) -dihydro-4- (alkyl) -3,5-pyridinecarboxylic acids.
RU92004413/04A 1992-01-21 1993-01-20 ADVANCED METHOD FOR OBTAINING DIHYDROPYRIDINDICARBOXYLATES RU92004413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/822791 1992-01-21

Publications (1)

Publication Number Publication Date
RU92004413A true RU92004413A (en) 1995-03-27

Family

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