New Invention Profile
| Publication No: | IN202311003935 [India] | Application No: | 202311003935 |
| Title: | Enantioselective catalyst system and synthesis of mosquito repellent (+)-p-menthane-3,8-diol [(+)- pmd] from lemongrass essential oil | ||
| Publication Date: | 26-07-2024 | File Date: | 19-01-2023 |
| Inventor(s): | Prasanta Kumar Rout; Chandan Singh Chanotiya; Prashant Kumar; Anirban Pal; Narayan Prasad Yadav; Ashween Deepak Nannaware; Prema Gowri Vasudev; Anil Kumar Maurya | ||
| IPC Classification: | B01J 37/02 | ||
| Abstract: | The present invention relates to an eco-friendly, efficient and economical process for the synthesis of mosquito repellent (+)-p-menthane-3,8-diol [(+)PMD] from lemongrass essential oil (citral). PMD is well known as natural mosquito repellent. The complete synthesis has been divided into two steps, (i) synthesis of (+)- citronellal from citral using 0.5-2%Ru/1-4%Mn/GO composite cayalyst, (ii) synthesis of (+)-PMD from citronellal using metal-SO3H-biochar-sebacic acid/azelaic composite catalyst. The present invention further relates to the synthesis of 0.5-2%Ru/1-4%Mn/GO (graphene oxide) and metal-SO3H-biochar-sebacic acid/azeleic acid composite catalyst. The metal is selected from the groups of Cr(II), Zn(II), Zr(II), Cu(II), Mn(II), Ni(II), Cr(III), etc. The above conversion is also effective by taking lemongrass essential oil instead of pure citral. Both (+)-citronellal and (+)-PMD are commercial important compounds, and (+)-PMD is displaying strong mosquito repellent activity. (+)-PMD is non-irritant to the skin, so safe for dermatological applications. | ||
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Industrial Applications
Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]
Medicinal and Aromatics Plants [Agriculture]
Personal care [Drugs and Pharmaceuticals]