ChemicalBook CAS DataBase List HYDROPRENE

HYDROPRENE synthesis

8synthesis methods

Product Name:HYDROPRENE
CAS Number:41096-46-2
Molecular formula:C17H30O2
Molecular Weight:266.42

Hydroprene is commercially synthesised through esterification of 3,7,11-trimethyl-2,4-dodecadienoic acid with ethanol. The production process begins with the preparation of the dodecadienoic acid backbone, which involves controlled oligomerization and selective methylation of linear precursors. This intermediate is then esterified with ethanol under acidic conditions to yield hydroprene. The final product is purified via distillation and stabilised for formulation

2-Hydroxy-3-methylbutanoic acid ethyl ester

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Yield:-

Steps:

Multi-step reaction with 8 steps
1: MnO₂
2: Et₃N / N-(2-hydroxyethyl)-thiazolium bromide / dioxane / 20 h / 95 - 100 °C
3: sodium borohydride / tetrahydrofuran / 1 h / 0 °C
4: pyridine / 24 h / 25 °C
5: potassium t-butoxid, 18-Crown-6 / benzene / 0.5 h / Ambient temperature
6: NaBH₄ / ethanol / 4 h / Heating
7: PBr₃, LiBr, 2,4,6-collidine / 3 h / -40 - 0 °C
8: 1.) ZnBr₂, 2.) DBU / 1.) ether, -40 deg C to 0 deg C, 2 h, 2.) 50 deg C, 2 h

References:

Baan, Gabor;Vinczer, Peter;Novak, Lajos;Szantay, Csaba [Tetrahedron Letters,1985,vol. 26,# 35,p. 4261 - 4264]

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References

7492-66-2
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References

2,6-Undecadiene, 8,10-diethoxy-10-methoxy-2,6-dimethyl-

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References

5392-40-5
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References

HYDROPRENE Related Search:

S-(+)-METHOPRENE

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