- PREPARATION OF DERIVATIVES OF CITRONELLAL
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The hydrogenation of citronellal and citral, if not separated from ethereal oils, leads regioselectively to dihydrocitronellal and citronellal, respectively.The reaction of citral with (+)-ephedrin or L-aspartic acid, followed by hydrogenation and deblocking the aldehyde function, yields optically active citronellal.Reacting the aldehyde function of citronellal with diethanolamine, piperidine or morpholine, the alcohol addition to the 6,7-double bond results in 7-alkoxy substituted citronellals with acceptable yield.The formation of 7-hydroxy-6,7-dihydrocitronellal during this reaction has been proved and the effect of reaction parameters on the yield have been discussed.
- Koertvelyessy, Gyula
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p. 347 - 354
(2007/10/02)
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