Method of the synthesis of diethyl or diisopropyl haloalkylphosphonates and diethyl or diisopropyl haloalkyloxyalkylphosphonates

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F18%3A00499654" target="_blank" >RIV/61388963:_____/18:00499654 - isvavai.cz</a>

Result on the web

<a href="https://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20180207&DB=&locale=en_EP&CC=EP&NR=2598509B1&KC=B1&ND=4#" target="_blank" >https://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20180207&DB=&locale=en_EP&CC=EP&NR=2598509B1&KC=B1&ND=4#</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Method of the synthesis of diethyl or diisopropyl haloalkylphosphonates and diethyl or diisopropyl haloalkyloxyalkylphosphonates

Original language description

The invention deals with the method of the synthesis of dialkyl haloalkylphosphonates and dialkyl haloalkyloxyalkylphosphonates via a microwave-heated Michaelis-Arbuzov reaction of trialkylphosphites with dihaloalkanes or bis(haloalkyl)ethers in a closed vessel, during which the reaction mixture, containing a dihaloalkane or bis(haloalkyl)ether and a trialkylphosphite, is heated with microwave radiation with the standard frequency (2.45 GHz) to reach a reaction temperature which is specific for each individual halogen. In the subsequent reaction of the first dihaloalkane or bis(haloalkyl)ether halogen atom with trialkyl phosphite, the desired dialkyl haloalkylphosphonate or dialkyl haloalkyloxyalkylphosphonate is formed, but the reaction of its halogen atom with the so-far present trialkylphosphite, leading to the creation of the relevant bisphosphonate, no longer takes place. In the case of an inhomogeneous reaction mixture, also the desired product in the amount of 0.1-5 molar % is added to the reaction mixture for its homogenization, which homogenizes it and thus precludes its uncontrollable overheating. The entire process of synthesis is more effective, faster, less expensive and more environmentally friendly than the methods described so far in the literature. The possibility of performing the described procedure also in a continuous-flow microwave reactor allows industrial production with minimal demands on an optimization of the reaction conditions for larger quantities, eliminates some security risks, dramatically reduces the spatial demands in production and reduces the need for the usage of large-tonnage industrial reactors.

Czech name

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Czech description

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Type

P - Patent

CEP classification

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OECD FORD branch

10401 - Organic chemistry

Project

<a href="/en/project/1M0508" target="_blank" >1M0508: New Antivirals and Antineoplastics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Patent/design ID

EP2598509

Publisher

EPO_1 -

Publisher name

European Patent Office

Place of publication

Munich, The Hague, Berlin, Vienna, Brussels

Publication country

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Date of acceptance

Feb 7, 2018

Owner name

Ústav organické chemie a biochemie AV ČR, v. v. i

Method of use

A - Výsledek využívá pouze poskytovatel

Usage type

A - K využití výsledku jiným subjektem je vždy nutné nabytí licence