The eco-compatible, base- and waste-free, energy-efficient, low-environmental-impact, gram-scale, mechanochemical preparation of marketed drugs such as nitrofurantoin (Furantin©), dantrolene (Dantrium©) and their structurally related derivatives is herein reported. Not a drop of organic solvent was used for the entire process and high yields of pure compounds were obtained without post-reaction work-up. Hydrazones were stable in the presence of water and gaseous HCl, formed as by-products during the synthesis. Comparative mechanochemical experiments were performed using diverse milling devices and jar materials, the active pharmaceutical ingredients were analyzed by PXRD and green metrics are calculated.

Mechanochemistry for "no solvent, no base" preparation of hydantoin-based active pharmaceutical ingredients: Nitrofurantoin and dantrolene

Colacino, E.
Primo
;
Porcheddu, A.
Secondo
;
Delogu, F.
Funding Acquisition
;
2018-01-01

Abstract

The eco-compatible, base- and waste-free, energy-efficient, low-environmental-impact, gram-scale, mechanochemical preparation of marketed drugs such as nitrofurantoin (Furantin©), dantrolene (Dantrium©) and their structurally related derivatives is herein reported. Not a drop of organic solvent was used for the entire process and high yields of pure compounds were obtained without post-reaction work-up. Hydrazones were stable in the presence of water and gaseous HCl, formed as by-products during the synthesis. Comparative mechanochemical experiments were performed using diverse milling devices and jar materials, the active pharmaceutical ingredients were analyzed by PXRD and green metrics are calculated.
2018
Environmental Chemistry; Pollution
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/252903
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