The title compound 1 and its nickel complex fulfill all that was hoped for: Substitution of porphycene with four propyl groups leads (as in the case porphyrins) to increased solubility crystallizability. is distinguished by strong NH…N hydrogen bridges NH tautomerism. has expected properties.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChirality as a probe for the structure of 1,2-cycloheptadiene and 1,2-cyclohexadieneMetin Balci W. M. JonesCite this: J. Am. Chem. Soc. 1980, 102, 25, 7607–7608Publication Date (Print):December 1, 1980Publication History Published online1 May 2002Published inissue 1 December 1980https://pubs.acs.org/doi/10.1021/ja00545a057https://doi.org/10.1021/ja00545a057research-articleACS PublicationsRequest reuse permissionsArticle...

A concise and regioselective approach to the synthesis of chromenopyridine chromenopyridinone derivatives was developed. The synthetic strategy relies on O-propargylation aromatic hydroxyaldehydes followed by reaction with propargylamine. intramolecular cycloaddition between alkyne azadiene, which is formed as an intermediate, furnished desired skeletons.

The tetramethyl and tetra-tert-butyl derivatives of cyclobutadiene tetrahedrane have been studied with ab initio density functional methods. ring in tetra-tert-butylcyclobutadiene displays very unequal bond lengths (1.354, 1.608 Å) confirms the earlier suspicion that low-temperature X-ray structure was distorted. C−C single bonds longest separations found to date between sp2-hybridized carbons. Tetra-tert-butyltetrahedrane, which prefers T over Td symmetry, is calculated be 1.5 kcal/mol more...

The pyrrole derivatives having carbonyl groups at the C-2 position were converted to N-propargyl pyrroles. reaction of those compounds with hydrazine monohydrate resulted in formation 5H-pyrrolo[2,1-d][1,2,5]triazepine derivatives. synthesis these was accomplished three steps starting from pyrrole. On other hand, attempted cyclization a ester substituted propargyl group nitrogen atom gave, unexpectedly, six-membered product, 2-amino-3-methylpyrrolo[1,2-a]pyrazin-1(2H)-one as major product....

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclic peroxides. 88. Reaction of 7-substituted cycloheptatrienes with singlet oxygen and 4-phenyl-1,2,4-triazoline-3,5-dioneWaldemar Adam, Metin Balci, Barbara PietrzakCite this: J. Am. Chem. Soc. 1979, 101, 21, 6285–6291Publication Date (Print):October 1, 1979Publication History Published online1 May 2002Published inissue 1 October 1979https://pubs.acs.org/doi/10.1021/ja00515a022https://doi.org/10.1021/ja00515a022research-articleACS...

A concise synthetic methodology for new heterocyclic scaffolds, such as pyrazolo-pyrrolo-pyrazine and pyrazolo-pyrrolo-diazepine skeletons, was developed. The key features of this method include (i) synthesis pyrrole-derived α,β-alkynyl ketones, (ii) introduction various substituents into the alkyne functionality by Sonogashira cross-coupling, (iii) pyrazole units reaction compounds with hydrazine monohydrate, (iv) gold-catalyzed cyclization pyrazoles units, (v) NaH. Furthermore, allows to...

The gold-catalyzed reaction of pyrrole and indole oximes having a propargyl group attached to the nitrogen atom was studied. selective 6-endo-dig mode cyclization observed for terminal alkynes giving rise formation pyrazine N-oxides in presence gold catalyst. However, with substituted alkyne transferred oxime functionality intramolecularly from one carbon another via 7-endo-dig process. This transformation is unprecedented literature named an oxime–oxime rearrangement.

Gold-catalyzed and NaH-supported intramolecular cyclization of N-propargyl indole derivatives with pyrazole pyrrole units attached to is described. An efficient route the synthesis pyrazolodiazepinoindole, pyrazolopyrazinoindole, pyrrolopyrazinoindole has been established. First, 2-(1H-pyrazol-5-yl)-1H-indole 2-(1H-pyrrol-2-yl)-1H-indole were synthesized. Introduction various substituents into alkyne functionality was accomplished by Sonogashira cross-coupling reaction. pyrazoles having a...

Carbon–nitrogen bond formation is one of the most important reactions in organic chemistry. Various synthetic strategies for generation C–N bonds are described literature. For example, primary amines can be easily synthesized by thermal decomposition an acyl azide to isocyanate, i.e. Curtis rearrangement, followed hydrolysis; Curtius rearrangement has been used extensively. Furthermore, advantage isolation azides as well corresponding isocyanates. The isocyanates converted into various...

Abstract

Conduritols are 1,2,3,4-cyclohexenetetrol isomers and exist in ten possible isomeric forms (two mesofour DL-pairs) have been labelled A, B, C, D, E F. All of the conduritol already synthesised starting from completely different materials their biological importance studied. Transformation aromatic compounds into diols has opened up a new synthetic approach to various derivatives. useful precursors preparation cyclitols such as myo-inositols phosphates pseudo-sugars, some which important...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFunctionalization of Benzonorbornadiene: High-Temperature Bromination and Electrochemical OxidationArif Dastan, Umit Demir, Metin BalciCite this: J. Org. Chem. 1994, 59, 22, 6534–6538Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissue 1 November 1994https://pubs.acs.org/doi/10.1021/jo00101a011https://doi.org/10.1021/jo00101a011research-articleACS PublicationsRequest reuse permissionsArticle...

Photooxygenation of 1,4-cyclohexadiene afforded hydroperoxy endoperoxides 3 and 4 in a ratio 88:12. Reduction with LiAlH(4) or thiourea followed by acetylation the hydroxyl group KMnO(4) oxidation double bond gave proto-quercitol 10b. Application same reaction sequences to resulted formation gala-quercitol 14. Quercitols were easily obtained ammonolysis acetate derivatives MeOH. The outcome dihydroxylation reactions supported conformational analysis.

Die Titelverbindung 1 und ihr Nickelkomplex erfüllen die Hoffnungen , in sie gesetzt worden waren: Durch Substitution von Porphycen mit vier Propylgruppen werden (wie bei Porphyrinen) Löslichkeit das Kristallisationsvermögen erhöht. zeichnet sich durch starke NH…N‐Wasserstoffbrücken NH‐Tautomerie aus. Der hat erwarteten Eigenschaften. magnified image

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCobalt(II) tetraphenylporphyrin-catalyzed decomposition of bicyclic endoperoxidesYasar Sutbeyaz, Hasan Secen, and Metin BalciCite this: J. Org. Chem. 1988, 53, 10, 2312–2317Publication Date (Print):May 1, 1988Publication History Published online1 May 2002Published inissue 1 1988https://pubs.acs.org/doi/10.1021/jo00245a034https://doi.org/10.1021/jo00245a034research-articleACS PublicationsRequest reuse permissionsArticle...