- Dealkylation of phosphonate esters with chlorotrimethylsilane
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Chlorotrimethylsilane completely dealkylates phosphonate esters at elevated temperature in a sealed reaction vessel. These conditions are tolerated by a variety of functional groups and lead to high conversions of dimethyl, diethyl and diisopropyl phosphonates to their corresponding phosphonic acids.
- Gutierrez,Prisbe,Rohloff
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p. 1299 - 1302
(2007/10/03)
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- ACTION OF SULFURIC ACID ON ORGANOPHOSPHORUS COMPOUNDS CONTAINING β-CHLOROSTYRYL GROUPS
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By the action of concentrated sulfuric acid on bis(β-chlorostyryl)phosphonic acid and on trichlorobis(β-chlorostyryl)phosphorane with subsequent hydrolysis we obtained, depending on the reactant ratio, diphenacylphosphinic acid or products of its cyclization: 4-hydroxy-2,6-diphenyl-4H-1,4-oxaphosphorin 4-oxide and 4,4'-oxybis.By the action of concentrated sulfuric acid on (β-chlorostyryl)phosphonic acid (or dichloride) and its diesters we obtained phenacylphosphonic acid and its diesters respectively.
- Fedorova, G. K.,Anan'eva, L. G.,Yakovchuk, O. A.
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p. 1321 - 1323
(2007/10/02)
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