- N,N-Dichloro poly(styrene-co-divinyl benzene) sulfonamide polymeric beads: an efficient and recyclable reagent for the synthesis of dialkyl chlorophosphates from dialkylphosphites at room temperature
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An efficient and operationally simple method is developed for the synthesis of dialkyl chlorophosphates from dialkylphosphites using a new chlorine bearing reagent, N,N-dichloro poly(styrene-co-divinyl benzene) sulfonamide in the form of polymeric beads. The reagent afforded dialkyl chlorophosphates at room temperature, and is recyclable.
- Gupta, Hemendra K.,Mazumder, Avik,Garg, Prabhat,Gutch, Pranav K.,Dubey, Devendra K.
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- N-tert-butyl-N-chlorocyanamide: A mild and efficient chlorinating agent for the synthesis of dialkyl/diaryl chlorophosphates
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An efficient reagent for the synthesis of dialkyl/diaryl chlorophosphates has been developed. N-tert-Butyl-N-chlorocyanamide acts as a chlorinating agent both in polar as well in non-polar medium and the transformation of dialkyl/diaryl phosphites to the dialkyl/diaryl chlorophosphates takes place rapidly under mild conditions in quantitative yields. Copyright
- Kumar, Vinod,Kaushik, Mahabir Parshad
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- Trichloroisocyanuric acid: An efficient reagent for the synthesis of dialkyl chlorophosphates from dialkyl phosphites
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A mild and operationally simple method for the synthesis of dialkyl chlorophosphates is described. Trichloroisocyanuric acid is used as an effective reagent for the rapid conversion of dialkyl phosphites to their corresponding dialkyl chlorophosphates under mild conditions.
- Acharya,Gupta,Shakya,Kaushik
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- Reactivity of an electrophilic hypervalent iodine trifluoromethylation reagent with hydrogen phosphates - A mechanistic study
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The electrophilic trifluoromethylation of hydrogen phosphates with the reagent trifluoromethyl-1,3-dihydro-3,3-dimethyl-1,2-benziodoxole (1) was studied by means of initial rates determined for pseudo first order setups and subsequent Taft analysis of the calculated relative rates. A positive polar sensitivity factor, indicative of a negative charge forming during the rate-determining step, was found for the whole data set.
- Santschi, Nico,Geissbühler, Patrik,Togni, Antonio
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experimental part
p. 83 - 86
(2012/03/27)
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- N, N′-Dichloro bis(2,4,6-trichlorophenyl) urea (CC-2): An efficient reagent for synthesis of dialkyl chlorophosphates
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An efficient and simple method is described for the preparation of dialkyl chlorophosphates by the use of new positive chlorine bearing reagent namely N,N′-dichloro bis(2,4,6-trichlorophenyl) urea.
- Shakya,Dubey,Pardasani, Deepak,Palit, Meehir,Gupta
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p. 821 - 823
(2007/10/03)
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