Results 211 to 220 of about 169,803 (413)
Asian Journal of Organic Chemistry, EarlyView.Efficient Buchwald‐Hartwig cross‐coupling reactions were utilized to synthesize quinazolinone derivatives with a five‐membered heterocyclic ring substituted onto the quinazolinone structure, through reactions with various 2‐amino pyridine derivatives. This synthetic method is applicable to a total of six different five‐membered heterocyclic compounds ...
Jimin Moon, Hyojin Lee, Taeho Lee
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Arabian Journal of Chemistry, 2019 The present paper aims to review the synthetic applicability of 4-hydroxycoumarin in heterocyclic synthesis during the period from 1996 up to now. This compound can be used as building blocks for five, six, and seven-membered heterocycles as well as ...
Moaz M. Abdou +2 more
doaj
Some correlations of carbazole derivatives with related heterocycles
, 1956 Julian B. Honeycutt
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Quaternary Nitrogen Heterocycles. IV. The 1-Methyl-4-nitroquinolinium and 4,4-Diiodo-1,1-dimethy1-1,4-dihydroquinolinium Cations, Two Methylation Products of 4-Nitroquinoline and their Reactions in Aqueous Solutions [PDF]
, 1974 John W. Bunting, William G. Meathrel
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Toward Charge-neutral ‘soft scorpionates’: Coordination Chemistry and Lewis Acid Promoted Isomerization of tris(1-organo-imidazol-2-ylthio)methanes [PDF]
, 2009 Two tris(1-organo-imidazol-2-ylthio)methanes, HC(S-timR)3 (R = organo = methyl, tert-butyl), have been prepared by a triphasic reaction between chloroform, the appropriate heterocycle, and saturated aqueous solutions of Na2CO3, in the presence of a phase
Gardinier, James R. +4 more
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A Novel Merocyanine Derivative for Probing Polarity at Cubosome Interfaces
Asian Journal of Organic Chemistry, EarlyView.This study develops a synthetic route to C10SP, a polarity‐sensitive sensor embedded in phytantriol‐based cubosomes. Strategic steps included tertiary amine‐mediated amidation to covalently attach a hydrophobic tail and controlled nitrogen methylation to form the iminium moiety within the indolenine scaffold.
Marcelo J. Eberhardt +3 more
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Asian Journal of Organic Chemistry, EarlyView.The cascade Michael/intramolecular transamidation reactions of 3‐phenacylidene‐2‐indolinone derivatives bearing a trifluoromethyl group as a novel Michael acceptor with hydrazines yielded the corresponding pyrazolidin‐3‐one derivatives in good to high yields with excellent diastereoselectivity.
Ryo Tsuyusaki +4 more
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Synthesis of a Molecular Tweezer Based on Norbornadiene Framework: Unexpected Stereoselectivity
Asian Journal of Organic Chemistry, EarlyView.A new type of Klarner's molecular tweezer was synthesized through annulation of an α‐amino ketone. Surprisingly, the reaction takes place stereoselectivity though the initial amino ketone is racemic. This tweezer comprises two near‐parallel flat aromatic rings as pincers, each bearing two methyl ester groups, and a pyrazine unit as the tether ...
Evren Cücü +3 more
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Synthesis of Oxygen Heterocycles Part III
, 1968 Masaaki Uchiyama, Kazumasa OOBA
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