Lewis acid-catalysed reaction of (cyclo)alkenes with oxiranes
作者:David Munro、Chris Newman
DOI:10.1016/s0040-4039(99)02253-4
日期:2000.2
The Lewis acid-catalysedreaction of (cyclo)alkenes with oxiranes can give homologous aldehydes, unsaturated alcohols, and fused furans. Many of these materials are of interest to the fragrance industry.
METHOD FOR PRODUCING DIVINYL ETHER COMPOUND HAVING ALKYLENE SKELETON
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US20220033334A1
公开(公告)日:2022-02-03
A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1)
wherein R
1
is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2)
which is obtained in the reacting, without an extraction.
Novel perfumery chemicals having a cyclic acetal structure and providing a variety of perfume notes, especially amber, are described. They are prepared by reacting specified diols and aldehydes/ketones.
Method for the preparation of 2,3-dimethyl-pent-4en-aldehyde
申请人:Carter-Wallace, Inc.
公开号:US04190607A1
公开(公告)日:1980-02-26
A process for the production of 2-methyl-2-sec. butyl-1,3-propanediol from crotyl alcohol is disclosed. The diol obtained is useful in the manufacture of 2-methyl-2-(1-methylpropyl)-1,3-propanediol dicarbamate a valuable antihypertensive agent.