Showing papers in "Journal of Heterocyclic Chemistry in 1975"

TL;DR: In this article, the synthesis of six unsymmetrically substituted tetraaryl porphyrins is reported, and the proton nmr spectra of these porphyrins are presented.

TL;DR: Three methods for the preparation of 2H-3,1-benzoxazine-2,4(1H)diones (isatoic anhydrides) are described in this article.

TL;DR: Tris-hydroxymethylphosphin (I) reagiert mit Urotropin (II) und Formaldehyd (III) zum Triaza-phospha-adamantan (IV), das mit Methyljodid zu (V) quaterniert wird as discussed by the authors.

TL;DR: In this paper, the syntheses of the geometrical isomers of 3-butyl-5-methyl-octahydroindolizine are described, reported as trail pheromones of Pharaoh ants, Monomorium pharaonis.

TL;DR: In this paper, the synthesis of substituted benzimidazole, benzothiazole, oxadiazole and triazine systems from dipotassium N-cyanodithioimidocate was described.

TL;DR: Benzo [1,2-c:3,4-c′:5,6-c″] was synthesized from benzo bis thiadiazole (11) as discussed by the authors.

TL;DR: In this paper, 2-Aminoselenazoles with ethyl propiolate or dimethyl acetylenedicarboxylate gave 7H-selenazolo[3,2-a]pyrimidin-7-ones.

TL;DR: In this article, a number of new derivatives of 4,6-diaminopyrazolo[3,4-d]pyrimidines substituted in the 1-and/or 3-positions have been obtained from reactions of guanidine carbonate with 1- and/or three-substituted-5-amino-4-cyanopyrazoles.

TL;DR: In this article, a general method of preparation of tellurochromanones is described by Friedel-Crafts intramolecular cyclisation of the corresponding acids, and the structure was determined by chemical evidence, analysis, uv, ir and nmr spectra.

TL;DR: In this article, the direction of dipole orientation and the structure assigned to the adducts were elucidated by nm-r spectroscopy, and the results of synthesis agreement with previously reported mechanistic considerations.

TL;DR: In this article, 2.9-Dimethyl-3-methoxy-9H-H-As-triazino[6,5-b]indolium tosylate and the related 3-methylthio compound 9 were prepared.

TL;DR: In this article, the reaction of 5-amino-1,3-dimethylpyrazole with ethyl acetoacetate yielded two isomeric pyrazolopyridones which were identified as their corresponding tetrahydropyrazylopyridine derivatives and by their ir, pmr and 13C-nmr spectral data.

TL;DR: In this paper, the synthesis of unsymmetrical 3-aryl and 3-heterocyclic s-tetrazines has been examined and the scope of the reaction and the product distribution is discussed.

TL;DR: In this article, the first example of mononuclear isoheterocyclic rearrangement is reported. But the results obtained are discussed only in terms of the 3-acethylamino-5-phenyl-1,2,4-oxadiazole (6).

TL;DR: In the presence of high boiling alcohols like diglycol, the corresponding esters can be isolated in good yields as mentioned in this paper, but Benzo-1,2,3-thiadiazole is an exception, because of the integrity of the aromatic nucleus.

TL;DR: In this paper, an indolo[2,3-c]quinolines and their positional isomers were prepared from both indole and quinoline derivatives by intramolecular nucleophilic displacement of aromatic fluorine.