异蒲勒醇 、 丙醛 在
silica gel 、 对甲苯磺酸 作用下,
以49%的产率得到2-ethyl-4,7-dimethyloctahydro-2H-chromen-4-ol
参考文献:
名称:
Solvent-free catalysed synthesis of tetrahydropyran odorants: the role of SiO
摘要:
An efficient, green and solvent-free catalysed Prins-cyclization reaction based on the simple grinding of an aldehyde and a homoallylic alcohol in the presence of catalytic amount of p-TSA on silica gel is reported. By this protocol were synthesized tetrahydropyran odorants including commercial Florol (R) and Clarycet (R), in one and two steps respectively.
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.
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.