Results 11 to 20 of about 29,362 (316)
Organic solvent-free synthesis of sulfonyl hydrazides in water
Tetrahedron Green Chem, 2023 An organic solvent-free synthesis of sulfonyl hydrazides has been achieved in water. The reactions of equimolar amount of sulfonyl chlorides and hydrazines afforded a series of substituted sulfonyl hydrazides at 60 °C for 1 h in water as a solvent in ...
Shizuki Noda, Shinji Tanimori
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Results in Chemistry, 2022 An efficient, fast, and environmentally gentle protocol for phthaloylation of amines, hydrazines and hydrazides via transamidation is described. The current research focuses on the phthaloylation of alicyclic, aliphatic, aromatic, heterocyclic amines ...
Prerna Ganwir +2 more
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Novel one-pot process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates [PDF]
Journal of the Serbian Chemical Society, 2015 A facile one-pot two-step process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates via the cyclocondensation of ethyl 2-thiocyanatoacetoacetate with a variety of hydrazine and hydrazide derivatives has been ...
Beyzaei Hamid, Aryan Reza, Moghadas Hadi
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Readily accessible sp3-rich cyclic hydrazine frameworks exploiting nitrogen fluxionality [PDF]
, 2020 Increased molecular complexity correlates with improved chances of success in the drug development process. Here, a strategy for the creation of sp3-rich, non-planar heterocyclic scaffolds suitable for drug discovery is described that obviates the need ...
Carson, Nessa +7 more
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Cyanothioacetamides as a synthetic platform for the synthesis of aminopyrazole derivatives
Beilstein Journal of Organic Chemistry, 2023 It was shown that the reaction of 2-cyanothioacetamides with hydrazine involves both cyano- and thioamide groups, and 3,5-diaminopyrazoles are formed. In the reaction of 2-cyano-3-(dimethylamino)-N,N-dimethylprop-2-enethioamides with hydrazine and its ...
Valeriy O. Filimonov +4 more
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Thermal Decomposition of Hydrazines from Reactive Dynamics Using the ReaxFF Reactive Force Field [PDF]
, 2009 We report reactive dynamics (RD) studies on: the decomposition of bulk hydrazine (N_2H_4); the decomposition of bulk monomethyl-hydrazine (CH_3N_2H_3), hereafter referred to simply as methyl-hydrazine; the decomposition of hydrazine in the presence of ...
Goddard, William A., III +3 more
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Reaction of Nitrilimines and Nitrile Oxides with Hydrazines, Hydrazones and Oximes
Molecules, 2005 This review article discusses the reaction of nitrilimines and nitrile oxides with hydrazines, hydrazones, and oximes. Three reaction modes were observed.
Adel M. Awadallah +1 more
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Synthesis of the Fmoc-aza-Arg(Boc)2 precursor via hydrazine alkylation; pp. 438–443 [PDF]
Proceedings of the Estonian Academy of Sciences, 2014 The aza-arginine precursor Fmoc-aza-Arg(Boc)2 was synthesized starting from mono-protected hydrazines via an aza-ornithine precursor. This reaction path is shorter and more efficient than the reductive alkylation reaction.
Anton Mastitski +2 more
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2-tert-Butyl-5,6,7,8,9,10-hexahydrocyclohepta[b]indole
Molbank, 2011 2-tert-Butyl-5,6,7,8,9,10-hexahydrocyclohepta[b]indole was synthesized by reaction of cycloheptanone and (4-tert-butylphenyl)hydrazine hydrochloride in the presence of sodium acetate and sulfuric acid in glacial acetic acid via Fischer indole synthesis.
Janina Wobbe +5 more
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Ultrasonics Promoted Synthesis of 5-(Pyrazol-4-yl)-4,5-Dihydropyrazoles Derivatives
Applied Sciences, 2013 A series of new 1,3-diaryl-5-(1-phenyl-3-methyl-5-chloropyrazol-4-yl)-4,5-dihydropyrazole derivatives have been synthesized under sonication conditions in ethanol or methanol/glacial acetic acid mixture (5/1 ratio) with two equivalents of hydrazines and ...
Manuel Nogueras +4 more
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