Synthesis of 1,3-Selenazol-2(3H)-imines

New insight into the chemistry of selenoureas: synthesis and single crystal structural study of diverse derivatives

A series of new heteroatom derivatives of N-acylselenoureas was obtained through the reaction of KSeCN with acyl chloride and primary amines, followed by the cyclisation reaction with phenacyl bromides.

Regioselective one-pot three component synthesis of chiral 2-iminoselenazolines under sonication

A one-pot multi component reaction of selenoureas, which are in situ generated from l-amino esters and isoselenocyanates, with α-bromoketone under ultrasonication.

N-(2-Bromo-phen-yl)-1,3-selenazolo[5,4-b]pyridin-2-amine

The mol-ecular structure of the title mol-ecule, C12H8BrN3Se, is built up from fused selenazolo and pyridine rings, linked to a 2-bromo-aniline group. In the crystal, pairs of mol-ecules are linked by N-H⋯N hydrogen bonds into dimers, forming eight-membered ring motifs.

N-p-Tolyl-1,3-selenazolo[5,4-b]pyridin-2-amine

In the title compound, C13H11N3Se, the dihedral angle between the mean plane of the fused seleno-azolo-pyridine ring system and the p-toluidine ring is 14.260 (5)°. In the crystal, mol-ecules are linked by N-H⋯N hydrogen bonds, forming zigzag chains extending along the b-axis direction.