- Synthesis of β-chlorohydrins in water
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2,4,6-Trichloro-1,3,5-triazine (TCT, cyanuric chloride) was found to mediate the regio- and stereoselective ring opening of epoxides in H 2O in the presence of morpholine at room temperature to afford the corresponding β-chlorohydrins in excellent yields (Table). The transformation is very simple, fast, efficient, and ecologically beneficial.
- Das, Biswanath,Venkateswarlu, Katta,Krishnaiah, Maddeboina
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p. 149 - 152
(2007/10/03)
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- Conversion of epoxides to β-chlorohydrins with thionyl chloride and β-cyclodextrin in water
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Several epoxides are efficiently converted to the corresponding β-chlorohydrins in impressive yields with thionyl chloride in the presence of β-cyclodextrin using water as solvent at room temperature. Copyright Taylor & Francis, Inc.
- Surendra,Srilakshmi Krishnaveni,Nageswar,Rama Rao
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p. 2195 - 2201
(2007/10/03)
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- Efficient synthesis of chlorohydrins: Ionic liquid promoted ring-opening reaction of epoxides and TMSCl
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The environmentally benign, highly efficient synthesis of chlorohydrins by cleavage of epoxides using TMSCl in ionic liquid, bmimPF6, has been studied.
- Xu, Li-Wen,Li, Lyi,Xia, Chun-Gu,Zhao, Pei-Qing
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p. 2435 - 2438
(2007/10/03)
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- Demonstration of a phosphazirconocene as a catalyst for the ring opening of epoxides with TMSCI
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(Matrix presented) In this study, it was demonstrated for the first time that a phosphazirconocene catalyzes the ring opening of epoxides with TMSCI. This reactivity leads to a facile preparation of chlorohydrins. The late transition metal Fe analogue was found to catalyze the reaction at rates and stereoselectivity comparable to those of the Zr complex.
- Wang, Li-Sheng,Hollis, T. Keith
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p. 2543 - 2545
(2007/10/03)
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- Highly facile biomimetic regioselective ring opening of epoxides to halohydrins in the presence of β-cyclodextrin
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Highly regioselective ring opening of epoxides to halohydrins has been carried out in impressive yields with hydrogen and lithium halides in presence of β-cyclodextrin using water as solvent.
- Reddy, M.Arjun,Surendra,Bhanumathi,Rao, K.Rama
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p. 6003 - 6008
(2007/10/03)
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- Highly regioselective ring opening of epoxides and aziridines using cerium(III) chloride
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A wide variety of epoxides and aziridines were converted to the corresponding β-halohydrins and β-haloamines using cerium(III) chloride and the cerium(III) chloride/NaI system in acetonitrile. The reactions were highly regioselective and efficient with excellent yields under mild and neutral reaction conditions.
- Sabitha, Gowravaram,Satheesh Babu,Rajkumar,Reddy,Yadav
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p. 3955 - 3958
(2007/10/03)
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- Chain Reactions Induced by Cathodic Reduction
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Cathodic reduction of a system comprising carbon tetrachloride, chloroform, and an aldehyde led to an effective anionic chain reaction.The best current efficiency observed was about 1*104 percent .Such a chain reaction is an effective synthetic method for 1,1,1-trichloro-2-alkanols.The reaction system consisting of methyl trichloroacetate, methyl dichloroacetate, and an aldehyde and several other systems also exhibited a similar pattern of chain reaction.
- Shono, Tatsuya,Kise, Naoki,Masuda, Mitsuharu,Suzumoto, Takeshi
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p. 2527 - 2533
(2007/10/02)
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- Reactions du n=chloroparatoluenesulfonamidate de sodium (chloramine t) sur les olefines en miliu acide organique
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Vic. chloro-acetoxy and vic. chloro-tosylamino alcanes are the main products of the electrophilic reaction of chloramine T on olefins in acetic acid. The stereochemistry of the acetoxy chloration of the 2-butenes and cyclohexene is trans.
- Damin, Bernard,Garapon, Jacques,Sillion, Bernard
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p. 1709 - 1710
(2007/10/02)
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