TETRAHYDROPYRANYL LOWER ALKYL ESTERS AND THE PRODUCTION OF SAME USING A KETENE COMPOUND
申请人:BASF SE
公开号:US20200325112A1
公开(公告)日:2020-10-15
The present invention relates to tetrahydropyranyl lower akyl esters and specifically to tetrahydropyranyl acetates, a method for preparation thereof using ketene and use thereof as fragrances and aroma substances.
(-)-Isopulegol undergoes Prins cyclization reaction in the presence of 20 wt% of acid-treated montmorillonite K10 to produce octahydro-2H-chromen-4-ols in good yields and with high cis selectivities under solvent-free conditions. The solid-acid catalyst can be reused without loss of its activity.
Synthesis and analgesic activity of alkyl-substituted octahydro-2H-chromenols
作者:I. V. Il’ina、D. V. Korchagina、E. A. Morozova、T. G. Tolstikova、K. P. Volcho、N. F. Salakhutdinov
DOI:10.1007/s11172-022-3677-x
日期:2022.11
A series of new compounds with hydrogenated 2H-chromene framework was synthesized starting from aliphatic aldehydes and available p-menthane monoterpenoid (−)-isopulegol in the presence of montmorillonite K10. These compounds were formed as a pair of diastereoisomers, which were isolated individually using column chromatography. Some of the compounds obtained were found to exhibit high analgesic activity in in vivo tests.
Tetrahydropyranyl lower alkyl esters and the production of same using a ketene compound
申请人:BASF SE
公开号:US10981885B2
公开(公告)日:2021-04-20
The present invention relates to tetrahydropyranyl lower akyl esters and specifically to tetrahydropyranyl acetates, a method for preparation thereof using ketene and use thereof as fragrances and aroma substances.
[DE] TETRAHYDROPYRANYLNIEDERALKYLESTER UND DEREN HERSTELLUNG MITTELS EINER KETENVERBINDUNG<br/>[EN] TETRAHYDROPYRANYL LOWER ALKYL ESTERS AND THE PRODUCTION OF SAME USING A KETENE COMPOUND<br/>[FR] ESTERS D'ALKYLE INFÉRIEURS DE TÉTRAHYDROPYRANYLE ET LEUR PRODUCTION AU MOYEN D'UNE LIAISON CÉTÈNE
申请人:BASF SE
公开号:WO2017207539A1
公开(公告)日:2017-12-07
Die vorliegende Erfindung betrifft Tetrahydropyranylniederalkylester und speziell Tetrahydropyranylacetate, ein Verfahren zu deren Herstellung unter Verwendung von Keten und deren Verwendung als Riech- und Aromastoffe.