METHOD OF PRODUCTION OF LIMONENE DIEPOXIDES Russian patent published in 2008 - IPC C07D301/12 C07D303/04 

Abstract RU 2324690 C1

FIELD: chemistry.

SUBSTANCE: invention covers production of mixture of stereoisomers of limonene diepoxides (1.2-8.9-diepoxide-p-terpanes) used as resin components or composites for technical purposes, in fine organic synthesis and in perfumes. The method includes epoxidation of double bonds in limonene with diluted hydrogen peroxide in water solution of acetonitrile, N,N-dimethylformamide or methanol at ambient temperature under catalytic action of manganese sulphate mixed with sodium bicarbonate and salicylic acid. Further reaction products are extracted from the reaction mixture with organic solvent, extractant is distilled. Crude epoxide thus obtained undergoes purification by established methods (vacuum distillation or absorption). The method allows to obtain diepoxides mixture with 93-97% purity and yield up to 85%.

EFFECT: development of technological method of production of resin component and composite material for fine organic synthesis.

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RU 2 324 690 C1

Authors

Bakhvalov Oleg Vasil'Evich

Fomenko Vladislav Viktorovich

Salakhutdinov Nariman Faridovich

Dates

2008-05-20Published

2006-10-31Filed