26776-28-3Relevant articles and documents
Scalable, sustainable and catalyst-free continuous flow ozonolysis of fatty acids
Atapalkar, Ranjit S.,Athawale, Paresh R.,Srinivasa Reddy,Kulkarni, Amol A.
supporting information, p. 2391 - 2396 (2021/04/07)
A simple and efficient catalyst-free protocol for continuous flow synthesis of azelaic acid is developed from the renewable feedstock oleic acid. An ozone and oxygen mixture was used as the reagent for oxidative cleavage of double bond without using any metal catalyst or terminal oxidant. The target product was scaled up to more than 100 g with 86% yield in a white powder form. Complete recycling and reuse of the solvent were established making it a green method. The approach is significantly energy efficient and also has a very small chemical footprint. The methodology has been successfully tested with four fatty acids making it a versatile platform that gives value addition from renewable resources.
FLOW CHEMISTRY SYNTHESIS OF ISOCYANATES
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Paragraph 0008; 0175; 0180, (2021/06/22)
The disclosure provides, inter alia, safe and environmentally-friendly methods, such as flow chemistry, to synthesize isocyanates, such as methylene diphenyl diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and tetramethylxylene diisocyanate.
Process for preparing azelaic acid
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Paragraph 0105-0108, (2021/02/19)
A process for preparing azelaic acid is disclosed. In particular, the process for preparing azelaic acid is an ozone free process. The process for preparing azelaic acid comprises a step of decarboxylation of tetra-carboxylic acid in the presence of a organic sulfonic acid.
