Alkyl phosphite, alkyl phosphate and dialkyl alkane-phosphonate prepn. - from white phosphorus, alcohol, metal alcoholate and polyhalohydrocarbon in soln

Alkyl phosphite, alkyl phosphate and dialkyl alkane-phosphonate prepn. - from white phosphorus, alcohol, metal alcoholate and polyhalohydrocarbon in soln

Tri-and/or dialkyl phosphites, (I), trialkyl phosphates, (II), and dialkyl alkane-phosphonates, (III), are prepd. simultaneously from white P. The one-step process comprises reacting P with alcohols, metal alcoholates and polyhalohydrocarbons, e.g. CCl4, at 0-100 (44-60) degrees C, in a solvent or s...

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Hauptverfasser: LEHMANN,HANS-ALBERT,.ER.NAT.HAB, RICHTER,HERFRIED,.DR, KURZE,ROLF,.DR, OERTEL,MANFRED, SCHADOW,HERBERT,.ER.NAT
Format: Patent
Sprache:eng ; ger
Schlagworte:
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:Tri-and/or dialkyl phosphites, (I), trialkyl phosphates, (II), and dialkyl alkane-phosphonates, (III), are prepd. simultaneously from white P. The one-step process comprises reacting P with alcohols, metal alcoholates and polyhalohydrocarbons, e.g. CCl4, at 0-100 (44-60) degrees C, in a solvent or solvent mixt. (I), (II) and (III) are prepd. in high yield and are used esp. as plant-protective agents, textile finishes and flame-proofing agents. Reaction parameters and reactant ratios can be varied in order to favour formation of desired esters. By-products include a proton-enriched polyhalohydrocarbob, e.g. CHCl3 when using CCl4, and dialkyl ethers, e.g. Me2O when using MeOH, which can be used industrially. Chloride prodn. is small and process creates no corrosion and no pollution problems.