Results 161 to 170 of about 272,115 (235)
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Flow Approach to Interrupted Curtius Rearrangement of Proline Derivatives
Synfacts, 2021M. Lautens, Alexa Torelli
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DMAP Catalyzed One-Pot Curtius Rearrangement Using 1,1-Dimethyl-2,2,2-trichloroethoxycarbonyl Azide.
Organic Letters, 2023We report our development of a controllable, base-free, one-pot Curtius rearrangement using 1,1-dimethyl-2,2,2-trichloroethoxycarbonyl azide (DMTN3) with 4-(dimethylamino)pyridine (DMAP) as a catalyst.
Ken-Ching Lin, Hongjian Lu
semanticscholar +1 more source
Organic Letters, 2023
The hydroxytetrahydropyrrolo-imidazolidinone (HTHP-I) core present in colensolide A is a synthetically intriguing scaffold as a result of its high heteroatom/carbon ratio and perceived instability.
Evan Savelson, J. Tepe
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The hydroxytetrahydropyrrolo-imidazolidinone (HTHP-I) core present in colensolide A is a synthetically intriguing scaffold as a result of its high heteroatom/carbon ratio and perceived instability.
Evan Savelson, J. Tepe
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Synthesis of New Dialkyl 2,2′-[Carbonylbis(azanediyl)]dibenzoates via Curtius Rearrangement
Synthesis, 2021The 2-(alkylcarbonyl)benzoic acids obtained by esterification of phthalic anhydride are converted into azide derivatives: alkyl 2-[(azidocarbonyl)amino]benzoates and to ureas: dialkyl 2,2′-[carbonylbis(azanediyl)]dibenzoates.
M. Khouili +7 more
semanticscholar +1 more source
European Journal of Organic Chemistry, 2001
On interaction of N-(trifluoromethylsulfonyl)carboximidoyl chlorides (analogs of acyl chlorides in which the carbonyl oxygen atom is substituted by the more strongly electron-withdrawing =NSO2CF3 group) with sodium azide in glyme or acetonitrile at −5 to +10 °C, dinitrogen is eliminated quantitatively and carbodiimides RN=C=NSO2CF3 are formed in high ...
Lev M. Yagupolskii +5 more
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On interaction of N-(trifluoromethylsulfonyl)carboximidoyl chlorides (analogs of acyl chlorides in which the carbonyl oxygen atom is substituted by the more strongly electron-withdrawing =NSO2CF3 group) with sodium azide in glyme or acetonitrile at −5 to +10 °C, dinitrogen is eliminated quantitatively and carbodiimides RN=C=NSO2CF3 are formed in high ...
Lev M. Yagupolskii +5 more
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Theoretical insights into photo-induced Curtius rearrangement of chlorodifluoroacetyl azide
Organic Chemistry Frontiers, 2017Xing-Liang Peng +2 more
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Physical Chemistry, Chemical Physics - PCCP, 2020
Organic azides are an efficient source of nitrenes, which serve as vigorous intermediates in many useful organic reactions. In this work, the complete active space self-consistent field (CASSCF) and its second-order perturbation (CASPT2) methods were ...
J. Li +3 more
semanticscholar +1 more source
Organic azides are an efficient source of nitrenes, which serve as vigorous intermediates in many useful organic reactions. In this work, the complete active space self-consistent field (CASSCF) and its second-order perturbation (CASPT2) methods were ...
J. Li +3 more
semanticscholar +1 more source
Curtius-Rearrangement Approach to 2,3-Substituted Indoles
Synfacts, 2008 Olivier Leogane, H. Lebel
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