- Recyclable superparamagnetic Fe3O4 nanoparticles for efficient catalysis of thiolysis of epoxides
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An efficient and rapid procedure is developed for room-temperature ring opening of various epoxides with thiols under solvent-free conditions in the presence of catalytic amount of superparamagnetic Fe3O4 nanoparticles. As a result,
- Mojtahedi, Mohammad M.,Abaee, M. Saeed,Rajabi, Azam,Mahmoodi, Peyman,Bagherpoor, Saeed
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experimental part
p. 68 - 71
(2012/08/07)
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- Efficient synthesis of-Hydroxy sulfides and-Hydroxy sulfoxides catalyzed by Cu/MgO under solvent-free conditions
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Regio-, stereo-, and chemoselective ring opening of epoxides with thiols using Cu/MgO as a heterogeneous catalyst has efficiently been carried out to produce the corresponding β-hydroxy sulfides in excellent yields at room temperature under solvent-free c
- Das, Biswanath,Balasubramanyam, Penagaluri,Krishnaiah, Maddeboina,Veeranjaneyulu, Boyapati,Sudhakar, Dega
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experimental part
p. 2113 - 2121
(2010/08/13)
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- Rongalite promoted highly regioselective synthesis of β-hydroxy sulfides by ring opening of epoxides with disulfides
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Rongalite promotes cleavage of disulfides generating thiolate anions that then undergo facile ring opening of epoxides in the presence of K2CO3 to afford α-addition products 3 with good to excellent yields. The important f
- Guo, Wenxue,Chen, Jiuxi,Wu, Dengze,Ding, Jinchang,Chen, Fan,Wu, Huayue
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experimental part
p. 5240 - 5243
(2009/11/30)
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- Additive-free thiolysis of epoxides in water: A green and efficient regioselective pathway to β-hydroxy sulfides
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Room-temperature ring opening of various epoxides with aromatic thiols was carried out in water in the absence of any Lewis acid or additive. High yields of β-hydroxy sulfides with excellent regioselectivity were obtained under very environmentally friend
- Abaee, Saeed M.,Mojtahedi, Mohammad M.,Abbasi, Hassan,Fatemi, Ensieh R.
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p. 282 - 289
(2008/03/17)
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- Alumina-supported molybdenum (VI) oxide: An efficient and recyclable heterogeneous catalyst for regioselective ring opening of epoxides with thiols, acetic anhydride, and alcohols under solvent-free conditions
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An efficient and simple protocol for regioselective ring opening of epoxides with thiols, acetic anhydride, and alcohols using 16wt% MoO3 supported on alumina as a recyclable catalyst is described. Copyright
- Singhal, Sweety,Jain, Suman L.,Sain, Bir
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p. 620 - 621
(2008/12/21)
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- Facile room-temperature MgBr2·OEt2-catalyzed thiolysis of epoxides under solvent-free conditions
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Solvent-free ring opening of 1,2-epoxides with aromatic and aliphatic thiols under 1 mol% magnesium bromide ethyl etherate catalysis affords rapid formation of β-hydroxy sulfides at ambient temperature with excellent yields. Nucleophilic attack of the thi
- Mojtahedi, Mohammad M.,Abaee, M. Saeed,Bolourtchian, Mohammad,Abbasi, Hassan
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p. 905 - 910
(2008/02/01)
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- Stereo- and regioselective thiolysis of 1,2-epoxides in water
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A simple, efficient, stereoselective, and highly regioselective procedure for the synthesis of β-hydroxy sulfides by thiolysis of various 1,2-epoxides in water as a solvent, using no catalyst and under very mild conditions, is described. Copyright Taylor
- Movassagh, Barahman,Soleiman-Beigi, Mohammad
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p. 3239 - 3244
(2008/02/12)
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- Solvent-free thiolysis of epoxides under lithium perchlorate catalysis
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Solvent-free ring opening of 1,2-epoxides with thiols using catalytic amounts of lithium perchlorate affords high yields of β-hydroxy sulfides. Nucleophilic attack of the thiols occurs regioselectively at the sterically less hindered side of the epoxides.
- Mojtahedi, Mohammad M.,Abassi, Hassan,Saeed Abaee,Mohebali, Bahareh
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p. 455 - 458
(2007/10/03)
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- Lipase-catalyzed separation of the enantiomers of 1-substituted-3-arylthio- 2-propanols
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Optically active (R)- and (S)-1-substituted-3-(arylthio)propan-2-ols have been prepared in the reaction of the appropriate 2-(arylthiomethyl)oxiranes with chloride and azide anions followed by a lipase-catalyzed transesterification. The effects of the enzyme preparation as well as of the reaction conditions have been compared in terms of the enantiomeric excess of the obtained acetate and unreacted alcohol.
- Wielechowska, Monika,Plenkiewicz, Jan
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p. 1199 - 1205
(2007/10/03)
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