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New Heterocyclic Compounds (new + heterocyclic_compound)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Peri and Regioselective Synthesis of New Heterocyclic Compounds from 1,5-Benzodiazepines.

CHEMINFORM, Issue 23 2003
S. Elhazazi
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Synthesis of Some New Heterocyclic Compounds from Benzopyrano[2,3-c]pyrazol-3-one Derivatives.

CHEMINFORM, Issue 51 2001
A. Khodairy
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Synthesis of 1,3-Diphospha-2,3-dihydro-1H -phenalenes

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 10 2010
Arkadii Tarasevych
Abstract The reaction of 1,8-dilithionaphthalene (1) with methylenebis[(dialkylamino)chlorophosphanes] [R2N(Cl)PCH2P(Cl)NR2; R = Me (2a), Et (2b)] leads to the formation of new heterocyclic compounds, 1,3-diphospha-2,3-dihydro-1H -phenalenes 3a,b as a mixture of cis and trans isomers. DFT calculations indicate that the cis isomers are thermodynamically more stable by about 1,3 kcal/mol than the trans isomers. Compounds 3a,b can be converted into dithio the derivatives 5a,b and the borane complexes 6a,b, which were characterized by NMR spectroscopy and investigated by X-ray diffraction analysis. The dialkylamino groups in 3 can be substituted by chlorine to give the chlorophosphane 7. [source]

Synthesis of new heterocyclic compounds having 1,2,3-triazole and isoxazole rings in a single molecule

JOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 1 2008
Qiu Chen
Five series of new heterocyclic compounds of 1,2,4-triazole Mannich bases, 1,3,4-oxadiazole Mannich bases, 1,3,4-oxadiazolines, 1,2,4-triazolo[3,4- b]1,3,4-thiadiazines and 1,2,4-triazolo[3,4- b]1,3,4-thiadiazoles, in which 1,2,3-triazolyl and isoxazolyl have been united, were synthesized from the intermediate of 5-methyl-3-(2-phenyl-2H -1,2,3-triazol-4-yl)isoxazole-4-carbohydrazide, Their structures were established by spectroscopy. [source]