Green and cost effective protocol for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines by using sawdust sulphonic acid

Autor:	Shrikrishna Karhale, Vasant Helavi, Gajanan Rashinkar, Monika Patil
Rok vydání:	2017
Předmět:	010405 organic chemistry Field emission scanning electron microscopy Chemistry General Chemistry 010402 general chemistry Grafting 01 natural sciences 0104 chemical sciences Catalysis Solvent Covalent bond visual_art visual_art.visual_art_medium Sawdust Spectroscopy Reusability Nuclear chemistry
Zdroj:	Research on Chemical Intermediates. 43:7073-7086
ISSN:	1568-5675 0922-6168
DOI:	10.1007/s11164-017-3059-4
Popis:	A heterogeneous solid acid catalyst has been prepared by covalent grafting of chlorosulphonic acid on the surface of sawdust (SD-OSO3H). The structure of the prepared catalyst was assessed by FT-IR, solid state CP/MAS 13C-NMR spectroscopy, field emission scanning electron microscopy and energy dispersive X-ray. The catalytic performance of the solid acid catalyst has been evaluated in the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines. High conversion, shorter reaction time, cleaner reaction profile, environmentally benign solvent, simple experimental and work-up procedure, and reusability of catalyst are the striking features of our synthetic route.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a43eae6d960898d59c73c423b80cf482 https://doi.org/10.1007/s11164-017-3059-4 Zobrazit plný text záznamu Plný text ve formátu PDF