[EN] PROCESS OF VITAMIN K2 DERIVATIVES PREPARATION<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE VITAMINE K2
申请人:INST FARMACEUTYCZNY
公开号:WO2019194690A1
公开(公告)日:2019-10-10
Provided is an improved process of vitamin K2 derivatives preparation, represented by formula (I) wherein n is an integer from 3 to 13.
提供了一种改进的维生素K2衍生物制备方法,表示为公式(I),其中n是从3到13的整数。
Prenylation of olefins in nitromethane
作者:M. Julia、C. Schmitz
DOI:10.1016/0040-4020(86)80012-6
日期:1986.1
The prenylation of isopentenyl and 3,3-dimethylallyl derivatives could be achieved effeciently with dimethyl, vinyl carbinol and a variety of acids in nitromethane. Geraniol and isopentenylacetate led to farnesyl derivatives.
Phenyloxy, phenylsulfinyl, phenylthio, phenylsulfonyl, benzyloxy, benzylthio, benzylsulfinyl, or benzylsulfonyl, alkyl or alkenyl derivatives wherein the alkyl or alkenyl group contains at least 7 carbon atoms which are useful in killing and preventing proliferation of insects by upsetting their hormone balance.
作者:I. Yu. Chukicheva、I. V. Fedorova、A. A. Koroleva、A. V. Kuchin
DOI:10.1007/s10600-015-1490-6
日期:2015.11
Hydroquinone was alkylated by geraniol in the presence of aluminum-phenoxide and -isopropoxide catalysts. The reaction products were isolated and characterized. Several features of the process were determined.
New sulfonyl compound and use of said compound in the process of producing vitamin A or its esters
申请人:DUPHAR INTERNATIONAL RESEARCH B.V
公开号:EP0456287A1
公开(公告)日:1991-11-13
The invention relates to a new sulfonyl compound having the general formula
wherein
R₁is an unsubstituted or substituted aryl group; and
R₂is a C₁-C₂₀ alkyl group, a C₂-C₂₀ alkenyl group or a C₂-C₂₀ alkynyl group, which groups may be substituted with one or more substituents selected from the group consisting of C₁-C₄ alkoxy, halogen, unsubstituted aryl and substituted aryl; or wherein R₂ is a tri(hydrocarbyl)silyl group, an optionally lower-alkyl- substituted dihydro- or tetrahydropyran-2-yl group, an optionally lower- alkyl-substitute dihydro- or tetrahydro-fur-2-yl group, or a lower alkoxyalkylgroup.
This sulfonyl compound can be used as an intermediate in the process of producing vitamin A or its esters.