ES305916A1 - A procedure for the preparation of new phosphoric acid esters. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of new phosphoric acid esters. (Machine-translation by Google Translate, not legally binding)
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CH Boehringer Sohn AG and Co KG
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CH Boehringer Sohn AG and Co KG
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A process for the preparation of new phosphoric acid esters of the general formula ** (See formula) ** where R1 and R2, which may be the same or different, mean alkyl groups with 1 to 4 carbon atoms, R3 an alkyl group with 1 to 12 carbon atoms, optionally substituted by a carboxylic acid ester group or an optionally substituted aryl group by one or more alkyl groups with 1 to 5 carbon atoms, one or more halogens and/or nitro groups, alkyl groups with 1 to 4 carbon atoms, hydrogen R5, a carboxyalkyl group with 1 to 5 carbon atoms which, optionally , can mean a carboxyamide group substituted once or twice by alkyl groups with 1 to 2 carbon atoms, an alkyl group with 1 to 4 carbon atoms or chlorine, and x is the number 0, 1 or 2, with the proviso that if R3 is an alkyl radical having 1 to 4 carbon atoms and, at the same time R5 is hydrogen or halogen, and x is the number 0, R4 can not be methyl, characterized in that compounds of the general formula are reacted ** (See formula) ** where Hal means chlorine or bromine and R3, R4, R5 and x have the significance indicated above, with trialkyl phosphites, optionally with subsequent oxidation of the sulfur advantageously with H2O2. (Machine-translation by Google Translate, not legally binding)
ES0305916A1963-11-131964-11-11A procedure for the preparation of new phosphoric acid esters. (Machine-translation by Google Translate, not legally binding)
ExpiredES305916A1
(en)
A procedure for the preparation of heterociclic compounds of the type of pinanopirazoles. (Machine-translation by Google Translate, not legally binding)
Procedure for obtaining esters of tio- and ditio-phosphoric acid, (-phosphonic, -phosphine) (Machine-translation by Google Translate, not legally binding)