Fungal mediated kinetic resolution of racemic acetates to ( R )-alcohols using Fusarium proliferatum
作者:Dipesh D. Jadhav、Harshal S. Patil、Patil S. Chaya、Hirekodathakallu V. Thulasiram
DOI:10.1016/j.tetlet.2016.08.084
日期:2016.10
Fungal mediated kineticresolution of seven acyclic/aromatic acetates was achieved using Fusarium proliferatum to furnish (R)-alcohols in high enantiomeric excess (>95%). The kineticresolution was established as one-pot two-step de-esterification/oxidation biocatalyticprocess. Further, the preparative scale synthesis of (R)-(+)-1-phenylethanol was accomplished through de-esterification/oxidation
Fifty years after its first discovery by Alan Francis Thomas, we describe a versatile, metal and pressure‐free domino‐Claisen–Cope rearrangement using the readily available α,β‐unsaturated aldehydes 5 or their acetals 5′ and allylic alcohols 6. This transformation provides a convenient access to a large number of radiant citrus and floral rosy odorants. Odor profiles of novel floral rosy and citrus
在艾伦·弗朗西斯·托马斯(Alan Francis Thomas)首次发现五十年之后,我们描述了一种多用途,无金属且无压力的多米诺-克莱森-科普重排方法,它使用易于获得的α,β-不饱和醛5或其缩醛5'和烯丙基醇6进行重排。通过这种转换,可以方便地访问大量的辐射柑橘和花香的玫瑰味气味剂。气味新颖花香红润和柑橘醇的型材13,14,和16进行了研究。化合物14ba具有花香,玫瑰色,天竺葵般的特征,并具有独特的性能和扩散性。复合16ba具有清晰的主要柑橘香气特征,具有干净的绿色葡萄柚/大黄成分。两种香精最近已成功引入Rosyfolia ™(14ba)和Pomelol ™(16ba)香水中。
Photochemische Reaktionen. 107. Mitteilung. Zur Photochemie offenkettiger 2,6-bzw. 2,7-Dien-Carbonylverbindungen
作者:Michikazu Yoshioka、Keitaro Ishii、Hans Richard Wolf
DOI:10.1002/hlca.19800630305
日期:1980.4.23
The Photochemistry of Open-Chained 2,6- or 2,7-Dien-Carbonyl Compounds
开链的2,6-或2,7-Dien-羰基化合物的光化学
METHOD FOR PRODUCING 2-ISOPROPYLIDENE-5-METHYL-4-HEXENYL BUTYRATE
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20150119597A1
公开(公告)日:2015-04-30
Provided is a simple and efficient method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate. More specifically, provided is a method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate, the method including the steps of: isomerizing 2-isopropenyl-5-methyl-4-hexenoic acid ester (1) into 2-isopropylidene-5-methyl-4-hexenoic acid ester (2), reducing thus formed 2-isopropylidene-5-methyl-4-hexenoic acid ester (2) into 2-isopropylidene-5-methyl-4-hexenol (3), and butyrylating thus formed 2-isopropylidene-5-methyl-4-hexenol (3) into 2-isopropylidene-5-methyl-4-hexenyl butyrate (4),
wherein R represents a C
1-10
hydrocarbon group.
Über die Lavandulylsäure und ihre Umwandlungsprodukte
作者:W. Kuhn、H. Schinz
DOI:10.1002/hlca.19520350630
日期:1952.8.1
Lavandulylsäure wurde durch Kondensation von Isoprenhydro-bromid mit Isopropyliden-malonester, Verseifung und Decarboxy-lierung des Reaktionsproduktes hergestellt.