Synthesis of Unsymmetrical Urea Derivatives via PhI(OAc) and Application in Late-Stage Drug Functionalization.

Unsymmetrical urea derivatives are essential structural motifs in a wide array of biologically significant compounds. Despite the well-established methods for synthesizing symmetrical ureas, efficient strategies for the synthesis of unsymmetrical urea derivatives remain limited. In this study, we present a novel approach for the synthesis of unsymmetrical urea derivatives through the coupling of amides and amines.

Wernicke's Encephalopathy (WE) Associated with Hyperemesis Gravidarum (HG) Presenting with Psychiatric Morbidity: Description of Two Cases.

Background: Hyperemesis gravidarum (HG) refers to intractable vomiting during pregnancy and is rarely associated with Wernicke's encephalopathy (WE). HG-associated WE can lead to mortality and permanent cognitive impairment if left untreated. In this report, we present two cases of WE following HG occurring in the context of comorbid severe depression.

In vitro evaluation of acaricidal activity of eugenol and benzaldehyde against Rhipicephalus annulatus.

Economic importance of ticks for both humans and animals is significant primarily because of their involvement in disease transmission. The continuous use of synthetic chemical acaricides on animals and/or in the environment has resulted in the emergence of resistant tick populations. Consequently, there is a compelling need to explore newer natural alternatives that can address their adverse effects effectively.

Metal free cross-dehydrogenative N-N coupling of primary amides with Lewis basic amines.

Hydrazides, N-N containing structural motifs, are important due to their presence in a wide variety of biologically significant compounds. While the homo N-N coupling of two NH moieties to form the hydrazide N-N bond is well developed, the cross-dehydrogenative hetero N-N coupling remains very unevolved. Here we present an efficient intermolecular N-N cross-coupling of a series of primary benzamides with broad range of Lewis basic primary and secondary amines using PhI(OAc) as both a terminal oxidant and a cross-coupling mediator, without the need for metal catalysts, high temperatures, and inert atmospheres, and with substantial potential for use in the late-stage functionalization of drugs.