49748-25-6Relevant articles and documents
2-ALKOXYMETHYL-3-ISOALKENYL-1-METHYLCYCLOPENTENES, USE THEREOF, IN PARTICULAR AS FRAGRANCE SUBSTANCES, CORRESPONDING ARTICLES AND PRODUCTION METHODS
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Page/Page column 11-13, (2009/04/24)
Compounds of formula (A) are described wherein, independently of one another, the following applies to groups R and R1: R is methyl or ethyl, and R1 is hydrogen or methyl, wherein the meandering line shows that for R1=methyl, the associated double bind is (E)- or (Z)-configured. Furthermore, methods for producing compounds of formula (A) and the use of corresponding compounds as fragrance and/or flavouring substances are described.
Carboindation of Alkynes. Regio- and Stereoselective Allylation of Carbon-Carbon Triple Bonds of Alkynols by Allylic Indium Reagents
Araki, Shuki,Imai, Akira,Shimizu, Ken,Yamada, Masafumi,Mori, Akihiro,Butsugan, Yasuo
, p. 1841 - 1847 (2007/10/02)
Allylindium sesquihalides undergo smooth allylindation with terminal alkynes bearing a neighboring hydroxyl group at 100-140 deg C to give allylalkenols.The coupling occurred regioselectively at the γ-carbon of the allylindium reagents via syn-addition, whereas the regioselectivity concerning the alkynol depends upon the structures of both allylindium and alkynol.The allylation of nonfunctionalized alkynes is less efficient, requiring higher reaction temperature (150-180 deg C) and giving lower yields.Mechanistic considerations suggest a hydroxyl-assisted concerted process for the allylindation of alkynols, whereas a radical pathway is more likely for nonfunctionalized alkynes.Three monoterpene alcohols, i.e., yomogi alcohol, achillenol, and isomyrcenol, were conveniently prepared via allylindation of appropriate alkynols.
THERMAL CYCLIZATION OF DERIVATIVES OF DEHYDROLINALOOL
Erman, M. B.,Cherkaev, G. V.,Gulyi, S. E.,Mochalin, V. B.
, p. 565 - 566 (2007/10/02)
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