“TPG-lite”: A new, simplified “designer” surfactant for general use in synthesis under micellar catalysis conditions in recyclable water
作者:Ruchita R. Thakore、Balaram S. Takale、Yuting Hu、Selene Ramer、Jakub Kostal、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1016/j.tet.2021.132090
日期:2021.5
Using the oxidized, carboxylic acid-containing form of MPEG-750, esterification with racemic vitamin E affords a new surfactant (TPG-lite) that functions as an enabling, nanoreactor-forming amphiphile for use in many types of important reactions in synthesis. The presence of a single ester bond is suggestive of simplified treatment as a component of (eventual) reaction waste water, after recycling
The reaction of dialkyl acetals derived from α,β-unsaturated aldehydes with Grignard reagents using TiCl4in THF afforded the cross coupling products, allyl ethers, in high yields. The TiCl4-promotedreaction of alkyl 2,4-dichlorophenyl acetals, synthesized from 3,4-dihydro-2H-pyran or ethyl vinyl ether and 2,4-dichlorophenol, with Grignard reagents in THF at low temperature afforded the corresponding
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).
[EN] IMPROVEMENT IN OR RELATING TO ORGANIC COMPOUNDS<br/>[FR] AMÉLIORATION APPORTÉE À DES COMPOSÉS ORGANIQUES
申请人:GIVAUDAN SA
公开号:WO2020120643A1
公开(公告)日:2020-06-18
The present invention is concerned with fragrance ingredients and with fragrance preparations, for imparting desirable odor notes to consumer products, in particular it is concerned with (2S,4R)-4-methyl-2-((Z)-2-methylbut-1-en-1-yl)tetrahydro-2H-pyran that can be used as replacements for 4-methyl-2-(2-methylprop-1-en-1-yl)tetrahydro-2H- pyran.
PRODUCTION OF 2-SUBSTITUTED 4-HYDROXY-4-METHYL-TETRAHYDROPYRANS FROM STARTING MATERIALS CONTAINING 2-ALKYL-4,4-DIMETHYL-1,3-DIOXANES
申请人:BASF SE
公开号:US20170037022A1
公开(公告)日:2017-02-09
The present invention relates to a method for preparing 2-substituted 4-hydroxy-4-methyltetrahydropyrans from starting materials comprising at least one 2-alkyl-4,4-dimethyl-1,3-dioxane.