Environmentally responsible, safe, and chemoselective catalytic hydrogenation of olefins: ppm level Pd catalysis in recyclable water at room temperature
作者:Balaram S. Takale、Ruchita R. Thakore、Eugene S. Gao、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1039/d0gc02087g
日期:——
Textbook catalytic hydrogenations are typically presented as reactions done in organic solvents and oftentimes under varying pressures of hydrogen using specialized equipment. Catalysts new and old are all used under similar conditions that no longer reflect the times. By definition, such reactions are both environmentally irresponsible and dangerous, especially at industrial scales. We now report
PRODUCTION OF 2-SUBSTITUTED 4-METHYL-TETRAHYDROPYRANS FROM STARTING MATERIALS CONTAINING 2-ALKYL-4,4-DIMETHYL-1,3-DIOXANES
申请人:BASF SE
公开号:US20170037020A1
公开(公告)日:2017-02-09
The invention relates to a method for producing 2-substituted 4-methyltetrahydropyrans of general formula (I) from starting materials containing at least one 2-substituted 4,4-dimethyl-1,3-dioxane of general formula (II).
Perfume composition containing (4R)-cis-4-methyl-2-substituted-tetrahydro-2H-pyran derivative and method for improving fragrance by using it
申请人:Takasago International Corporation
公开号:EP0770670A2
公开(公告)日:1997-05-02
A perfume composition which contains a (4R)-cis-4-methyl-2-substituted-tetrahydro-2H-pyran derivative represented by formula (I):
wherein - - represents a single or double bond,
and a method for improving fragrance by using this perfume composition.
Herstellung von 2-substituierten 4-Methyl-tetrahydropyranen aus 2-Alkyl-4,4-dimethyl-1,3-dioxan-haltigen Ausgangsstoffen
申请人:BASF SE
公开号:EP2865676A1
公开(公告)日:2015-04-29
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von 2-substituierten 4-Methyl-tetrahydropyranen der allgemeinen Formel (I)
aus Ausgangsmaterialien, die wenigstens ein 4,4-Dimethyl-1,3-dioxan der allgemeinen Formel (II) enthalten.