Crystal structure of 2-[(5-amino-1-tosyl-1H-pyrazol-3-yl)oxy]-1-(4-methoxyphenyl)ethan-1-one 1,4-dioxane monosolvate

Abstract

In the structure of the title compound, C19H19N3O5S·C4H8O2, the two independent dioxane molecules each display inversion symmetry. The pyrazole ring is approximately parallel to the aromatic ring of the oxy-ethanone group and approximately perpendicular to the tolyl ring of the sulfonyl substituent. An extensive system of classical and `weak' hydrogen bonds connects the residues to form a layer structure parallel to (201), within which dimeric subunits are conspicuous; neighbouring layers are connected by classical hydrogen bonds to dioxanes and by `weak' hydrogen bonds from Htolyl donors.