- Isothiocyanation of amines using the Langlois reagent
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The Langlois reagent was found to be effective for the isothiocyanation of primary amines in the presence of copper iodide and diethyl phosphonate.
- Liao, Yan-Yan,Deng, Jian-Chao,Ke, Yan-Ping,Zhong, Xiao-Lin,Xu, Li,Tang, Ri-Yuan,Zheng, Wenxu
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supporting information
p. 6073 - 6076
(2017/07/10)
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- NOVEL LIPIDS AND NOVEL PHOSPHOLIPIDS STRUCTURES
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The invention relates to a lipids comprising or consisting of 1,3-diamidolipids or/and 1,2-diamidolipids or/and 2,3-diamidolipids or/and 1,3-diurealipids or/and 1,2-diurealipids or/and 2,3-diurealipids or/and 1,3 -dithiourealipids or/and 1,2-dithiourealipids or/and 2,3-dithiourealipids or/and 1,3-diacylurealipids or/and 1,2-diacylurealipids or/and 2,3-diacylurealipids or/and 1 -amidolipids or/and 1-urealipids or/and 1-thiourealipids or/and 1-acylurealipids or/and cyclic-amidolipids or/and cyclic urealipids or/and cyclic thiourealipids or/and cyclic acylurealipids, and their medical and non-medical use.
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Page/Page column 62-63
(2012/09/22)
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- Synthesis and solution thermodynamic study of rigidified and functionalised EGTA derivatives
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The synthesis of a new series of EGTA (ethyleneglycol-bis(2- aminoethylether)-N,N,N′,N′-tetraacetic acid) derivatives incorporating aromatic and functionalized aromatic moieties into the oxoethylenic bridge is described. A solution thermodynamic study was
- Tei, Lorenzo,Baranyai, Zsolt,Botta, Mauro,Piscopo, Laura,Aime, Silvio,Giovenzana, Giovanni B.
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experimental part
p. 2361 - 2368
(2009/02/02)
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- Alkanethioimidoyl Radicals: Evaluation of β-Scission Rates and of Cyclization onto S-Alkenyl Substituents
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Thioimidoyl radicals were generated by addition of alkylsulfanyl radicals to alkyl isonitriles and were characterized by electron paramagnetic resonance (EPR) spectroscopy. The β-scissions of their C·S-C bonds were studied by variable-temperature EPR spectroscopy and the fragmentation rate constants and activation energies were calculated. The scission rates depend on the stability of the released alkyl radicals but in any case, at room temperature, the processes were fast. Data collected on similar oxyimidoyls showed that their fragmentations are slightly slower compared to those of analogous thioimidoyls. The scission rates of selenoimidoyls could not be studied by EPR and were evaluated by theoretical calculations. EPR experiments also enabled both β-scission and 5-exo ring closure rate constants of two S-but-3-enyl-substituted imidoyl radicals to be determined, showing that cyclization prevails only at low temperatures. Density functional theory (DFT) theoretical calculations predicted that the fragmentation process preferentially occurs from the s-cis rotamers (X-C bond) of the imidoyl radicals. Thio- and seleno-imidoyls (but not oxyimidoyls) prefer s-trans conformations so that their fragmentations involve prior rotation about the X-C bond.
- Minozzi, Matteo,Nanni, Daniele,Walton, John C.
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p. 2056 - 2069
(2007/10/03)
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- A general synthesis of isothiocyanates from dithiocarbamates using claycop
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A Convenient and simple synthesis of alkyl, aryl and amino acid isothiocyanates is described by the decomposition of ammonium dithiocarbamates using Claycop in mild conditions.
- Mesheram, Harashadas M.,Dale, Srinivas,Yadav
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p. 8743 - 8744
(2007/10/03)
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