New 1,2,3-Selenadiazole and 1,2,3-Thiadiazole Derivatives

New 1,2,3-selenadiazole and 1,2,3-thiadiazole derivatives.

New 1,2,3-thiadiazole and 1,2,3-selenadiazole derivatives, 14-23, were prepared from the ketones 1-5 via the corresponding semicarbazones or hydrazones 6-12. The Hurd-Mori and Lalezari methods were used, respectively, for the preparation of these 1,2,3-thiadiazole and 1,2,3-selenadiazole derivatives. The intermediate 13 was also trapped, separated and fully characterized. These derivatives are ...

New multi-1,2,3-selenadiazole aromatic derivatives.

The aromatic polyketones 3a-d are versatile compounds for the synthesis of the multi-1,2,3-selenadiazole aromatic derivatives 1a-d. The preparation starts with the reaction between the multi-bromomethylene benzene derivatives 2a-d and 4-hydroxy- acetophenone to give compounds 3a-d which are transformed through the reaction with semicarbazide hydrochloride or ethyl hydrazine carboxylate into the...

123 Editors

We present an adaptive mimetic finite difference method for the approximate solution of variational inequalities. The adaptive strategy is based on a heuristic hierarchical type error indicator. Numerical experiments that validate the performance of the adaptive MFD method are also presented. 1 The Obstacle Problem Throughout the paper we will use standard notations for Sobolev spaces, norms an...

Analysis 123

Ijprbs 123

Toxplasmosis is an important zoonotic disease caused by protozoan parasite Toxoplasma gondii. Transmission of the disease is mainly by ingestion of food or water contaminated with oocysts. Congenital toxoplasmosis occurs from the transplacental passage of from mother to fetus. Diagnosis of toxoplasmosis can be established by the direct detection of the parasite or serological methods. Among 150...