Results 41 to 50 of about 128 (98)
MoleculesThe addition reactions of water, alcohols, and primary and secondary amines to the 10-acetonitrilium derivative of nido-carborane were studied. Hydrolysis of 10-MeC≡N-7,8-C2B9H11 results in iminol 10-MeC(OH)=HN-7,8-C2B9H11, which, on treatment with a ...
Kirill R. Pakholkov +6 more
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Molecules, 2007 A series of novel benzimidazole derivatives 3-10 were synthesized. Benzimidazolyl-substituted acrylonitriles 3 and 4 underwent a photochemical dehydrocyclization reaction to give the corresponding mono- and dicyano-substituted benzimidazo[1,2-a ...
Marijana Hranjec, Grace Karminski-Zamola
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An Amidinate‐Stabilized Germatrisilacyclobutadiene Ylide
Chemistry – A European Journal, 2012 AbstractThe synthesis and characterization of new amidinate‐stabilized germatrisilacyclobutadiene ylides [L3Si3GeL′] (L=PhC(NtBu)2; L′=ËL; Ë=Ge (3), Si (7)) are described. Compound 3 was prepared by the reaction of [LSiSiL] (1) with one equivalent of [LGeGeL] (2) in THF. Compound 7 was synthesized by the reaction of 2 with excess 1 in THF.
Yeong, Hui-Xian +6 more
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Nitrogen-bound diazeniumdiolated amidines [PDF]
Chemical Communications, 2010 In contrast to amidines bearing ionizable alpha-CH bonds, which react with nitric oxide (NO) to add diazeniumdiolate groups at their alpha-carbons, benzamidine forms an N-bound diazeniumdiolate that can be further derivatized at the other amidine nitrogen and/or the terminal oxygen to form caged NO compounds as potential NO prodrugs.
Joseph A. Hrabie +3 more
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Amidines. II. Preparation of unsymmetrical N1,N2-disubstituted amidines.
Chemical and Pharmaceutical Bulletin, 1990 Unsymmetrical N1, N2-disubstituted amidines were prepared by conventional and newly developed methods. Reaction of N1-tosyl-N1, N2-diarylacetamidines and arylamines gave unsymmetrical acetamidines in the presence of basic catalysts, and N1-acyl-N1, N2-di(p-nitrophenyl)formamidines and arylamines gave unsymmetrical formamidines under neutral conditions.
Machiko Ono +2 more
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CHIMIA, 1976 A new synthesis of 2,4-bis(dialkylamino)-pyridines and quinolines is reported. Starting from primary aryl amines or aliphatic imines a mechanism via ynamine-amidines is followed if the cyanine Ia is used as reagent. When the cyanine is substituted, (I.R.
H.G. Viehe, G.J. de Voghel, F. Smets
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Beilstein Journal of Organic Chemistry, 2014 A facile and efficient synthetic protocol for the synthesis of α-amino amidines has been developed using a molecular iodine-catalyzed three-component coupling reaction of isocyanides, amines, and aldehydes. The presented strategy offers the advantages of
Praveen Reddy Adiyala +4 more
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Synthesis and Characterization of 6-Carbamoyl-1,2-dihydropurines
E-Journal of Chemistry, 2007 The aromatic amines react readily with (Z)-N-(2-amino-1,2-dicyanovinyl)formimidate (4) to give the amidines (5a-b), which cyclize in the presence of DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) to give the corresponding 2-(5-Amino-1-phenyl-1H-imidazol-4-yl ...
Asieh Yahyazadeh, Fatemah Hossaini
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A four-step synthesis of novel (S)-1-(heteroaryl)ethan-1-amines from (S)-Boc-alanine
Acta Chimica Slovenica, 2014 A series of (S)-1-(pyrimidin-4-yl)-, and regioisomeric (S)-1-(pyrazolo[1,5-a]pyrimidin-7-yl)-, and (S)-1-(pyrazolo[1,5-a]pyrimidin-5-yl)ethan-1-amines were prepared by cyclisation of (S)-N-Boc-alanine-derived ynone with N,N-1,3-dinucleophiles, such as ...
Jurij Svete +3 more
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Журнал органічної та фармацевтичної хіміїThe literature review discusses and systematizes synthetic approaches to medium-sized cycles and macrocycles based on ring expansion reactions of bi- or polycyclic systems via C-N bond cleavage. Ring expansion reactions of bicyclic ammonium salts proceed
Viacheslav Lysenko +2 more
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