Results 131 to 140 of about 12,717 (176)

1,3,4-Thiadiazines: Methods of synthesis and reactivity (review)

Chemistry of Heterocyclic Compounds, 1991
The synthetic methods for 1,3,4-thiadiazines and their intramolecular rearrangement reactions are reviewed.
S. V. Usol'tseva, G. P. Andronnikova, V. S. Mokrushin   +2 more
openaire   +1 more source

Synthesis and transformations of 2-amino-1,3,4-thiadiazines

Chemistry of Heterocyclic Compounds, 1991
Depending on the reaction conditions, 2-amino-1,3,4-thiadiazine and 2-hydrazinothiazole derivatives were obtained by cyclization of thiosemicarbazide with ethyl bromopyruvate in concentrated hydrochloric acid. The rearrangements of 5-carbonyl-substituted 2-amino-1,3,4-thiadiazines to thiazole derivatives in an acidic medium were studied.
S. V. Usol'tseva, G. P. Andronnikova, S. L. Nikolaeva, A. T. Lebedev, V. A. Shevyrin   +4 more
openaire   +1 more source

ChemInform Abstract: 1,3,4‐Thiadiazines: Synthesis and Reactivity

ChemInform, 1992
AbstractChemInform 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.
S. V. USOL'TSEVA, G. P. ANDRONNIKOVA, V. S. MOKRUSHIN   +2 more
openaire   +1 more source

Novel Synthesis of 1,3,4‐Thiadiazine Derivatives and Their Cycloaddition Reactions.

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +2 more sources

ChemInform Abstract: Facile Routes to 1,2,4‐Triazolo[3,4‐b][1,3,4]thiadiazines and 1,2,4‐Triazino[3,4‐b][1,3,4]thiadiazine by Heteropolyacids.

ChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Radineh Motamedi, Majid M. Heravi, Fatemeh F. Bamoharram, Anahita Haeri   +3 more
openaire   +1 more source

Synthesis and Reactivity of 3,4-Dimethyl-4H-1,3,4-thiadiazines

Synlett, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Wolf‐Diethard Pfeiffer, Erich Dilk, Harald Rossberg, Peter Langer   +3 more
openaire   +1 more source

Diastereoselective synthesis of 3,6-dihydro-2H-1,3,4-thiadiazines

Tetrahedron: Asymmetry, 1998
Abstract Thionation of the benzil hydrazones 3 with Lawesson's reagent afforded the 3,6-dihydro-2 H -1,3,4-thiadiazines 4 by an intramolecular cyclisation. This reaction was shown to be diastereospecific and allowed the formation of the exo compounds 4b – e .
Jean-Damien Charrier, Alain Reliquet, Jean Claude Meslin   +2 more
openaire   +1 more source

ChemInform Abstract: Synthesis of 1,3,4‐Thiadiazines and 1,3,4‐Oxadiazines

ChemInform, 1999
AbstractChemInform 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.
Ho Sik Kim, Yoshihisa Kurasawa
openaire   +1 more source

ChemInform Abstract: THE CHEMISTRY OF A 1,3,4‐THIADIAZIN‐6‐ONE

Chemischer Informationsdienst, 1982
AbstractDas Thiosemicarbazon (I) cyclisiert in Gegenwart von Dicyclohexylcarbodiimid (DCC) zum Dimethylamino‐phenyl‐thiadiazinon (II), das bei der Blitzvakuumpyrolyse unter Abspaltung von (IV) und (V) zum Thiadiazol (III) führt.
A. E. BAYDAR, G. V. BOYD, P. F. LINDLEY
openaire   +1 more source

Synthesis and Antiglycating Activity of 2-Aminopropylmorpholino-5-Aryl-6H-1,3,4-Thiadiazine Dihydrobromides and 2-Aminopropylmopholino-5-Thienyl-6H-1,3,4-Thiadiazine Dihydrobromides

Pharmaceutical Chemistry Journal, 2020
A group of novel 2-propylmorpholino-5-aryl- and 5-thienyl-6H-1,3,4-thiadiazine dihydrobromides was synthesized by cyclocondensation of 4-[3-(4-morpholino)propyl]-3-thiosemicarbazide with α –haloacetoarenones or α-haloacetylthiophenones. Two compounds of this group were found to produce effective inhibition of non-enzymatic protein glycation in an in ...
T. A. Tseitler, L. P. Sidorova, V. V. Emel’yanov, E. A. Savateeva, O. N. Chupakhin   +4 more
openaire   +1 more source