- Photo-biocatalytic One-Pot Cascades for the Enantioselective Synthesis of 1,3-Mercaptoalkanol Volatile Sulfur Compounds
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The synthesis of enantiomerically pure 1,3-mercaptoalkanol volatile sulfur compounds through a one-pot photo-biocatalytic cascade reaction is described. Two new KRED biocatalysts with opposite enantioselectivity were discovered and proved to be efficient
- Lauder, Kate,Toscani, Anita,Qi, Yuyin,Lim, Jesmine,Charnock, Simon J.,Korah, Krupa,Castagnolo, Daniele
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supporting information
p. 5803 - 5807
(2018/04/19)
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- Mild hydrosulfenylation of Olefins under neutral conditions using a defined NHC-ligated iron-sulfur catalyst
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A defined NHC-Fe-S complex proved to be an efficient catalyst for the selective hydrosulfenylation of α,β-unsaturated ketones or vinylnitriles. A wide range of different aliphatic thiols were transferred in this atom-economic reaction into the correspondi
- Alt, Isabel,Rohse, Philipp,Plietker, Bernd
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p. 3002 - 3005
(2014/01/06)
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- Diastereodivergent asymmetric sulfa-Michael additions of α-branched enones using a single chiral organic catalyst
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A significant limitation of modern asymmetric catalysis is that, when applied to processes that generate chiral molecules with multiple stereogenic centers in a single step, researchers cannot selectively access the full matrix of all possible stereoisome
- Tian, Xu,Cassani, Carlo,Liu, Yankai,Moran, Antonio,Urakawa, Atsushi,Galzerano, Patrizia,Arceo, Elena,Melchiorre, Paolo
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supporting information; experimental part
p. 17934 - 17941
(2012/01/03)
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- Fluoroboric acid adsorbed on silica-gel (HBF4-SiO2) as a new, highly efficient and reusable heterogeneous catalyst for thia-Michael addition to α,β-unsaturated carbonyl compounds
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Fluoroboric acid adsorbed on silica-gel (HBF4-SiO2) has been found to be a new and highly efficient heterogeneous catalyst for thia-Michael addition to α,β-unsaturated carbonyl compounds under solvent-free conditions. In the case of
- Sharma, Gaurav,Kumar, Raj,Chakraborti, Asit K.
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p. 4272 - 4275
(2008/09/21)
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- Scope and limitations of HClO4-SiO2 as an extremely efficient, inexpensive, and reusable catalyst for chemoselective carbon-sulfur bond formation
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The scope and limitations of perchloric acid adsorbed on silica gel (HClO4-SiO2) as a highly efficient, inexpensive, and reusable catalyst for chemoselective carbon-sulfur bond formation by conjugate addition of thiols to α,β-unsatur
- Khatik, Gopal L.,Sharma, Gaurav,Kumar, Raj,Chakraborti, Asit K.
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p. 1200 - 1210
(2007/10/03)
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- Thia-Michael addition reactions using 2-[bis(alkylthio)methylene]-3-oxo-N- o-tolylbutanamides as odorless and efficient thiol equivalents
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A series of 2-[bis(alkylthio)methylene]-3-oxo-N-o-tolylbutanamides 1 have been investigated as nonthiolic and odorless thiol equivalents in thia-Michael addition reactions. The cleavage of compounds 1 is initiated by NaOH in EtOH; the in situ generated th
- Dong, Dewen,Yu, Haifeng,Ouyang, Yan,Liu, Qun,Bi, Xihe,Lu, Yumei
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p. 283 - 287
(2007/10/03)
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- A general, Bronsted acid-catalyzed hetero-Michael addition of nitrogen, oxygen, and sulfur nucleophiles
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(Matrix presented) Strong Bronsted acids such as bis(trifluoromethanesulfon)imide catalyze the hetero-Michael addition of carbamates, alcohols, and thiols to α,β-unsaturated ketones, alkylidene malonates, and acrylimides. Scope, reaction rates, and yields are superior to comparable Lewis acid-catalyzed processes.
- Wabnitz, Tobias C.,Spencer, Jonathan B.
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p. 2141 - 2144
(2007/10/03)
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- A general, polymer-supported acid catalyzed hetero-Michael addition
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Hetero-Michael additions of nitrogen, oxygen and sulfur nucleophiles to α,β-unsaturated ketones were efficiently catalyzed by Nation SAC-13 perfluorinated resinsulfonic acid.
- Wabnitz, Tobias C.,Yu, Jin-Quan,Spencer, Jonathan B.
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p. 1070 - 1072
(2007/10/03)
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- Preparation and Trapping of Sulphenic Acids
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Benzene- and toluene-α-sulphenic acids have been prepared under mild conditions from 4-benzenesulphinyl- and 4-toluene-α-sulphinyl-4-methylpentan-2-one respectively.The acids were trapped with norbornadiene.
- Barrett, Anthony G.M.,Barton, Derek H.R.,Nagubandi, Sreemulu
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p. 237 - 239
(2007/10/02)
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