The development of a new method for effecting [4+2] cycloadditions on the surface of chromatographic adsorbents in the absence of solvents that leads to a moderation of the reaction conditions and an increase in selectivity is described.
Compared with the analogous reaction performed over a ZnCl2 catalyst in the conventional solvent dichloromethane, higher regioselectivity of the ‘para’ cycloadduct and excellent yield were achieved at shorter reaction time in these ionicliquids with optimized molar compositions of MX and ZnCl2. These moisture-insensitive ionicliquids can be easily separated from reaction products after simple washing
Etudes sur des les matières végétales volatiles CLXIX. Sur les terpènes de l'huile essentielle de lavande
作者:Yves-René Naves、Paul Tullen
DOI:10.1002/hlca.19600430621
日期:——
An authentic oil of lavender of French origin contains 0,1% β-myrcene, traces of Δ3-carene, 0,02% dipentene and 3% α-ocimene, and perhaps traces of α-pinene (not more than 0,06%).
DIELS-ALDER REACTION OF MYRCENE WITH CARBONYL CONTAINING DIENOPHILES SUPPORTED ON SILICA GEL UNDER MICROWAVE IRRADIATION
作者:Hossein Abdi Oskooie
DOI:10.1080/10426500490459777
日期:2004.6
Diels-Alder reactions of myrcene (7-methyl-3-methene-1,6-octadiene) with carbonyl containing dienophiles supported on silica gel undermicrowaveirradiation have been studied.