forthcoming articles

The formation of the title compound is best explained by the aerial oxidation of the 5-methyl group of 4-amino­anti­pyrine to an aldehyde group, and subsequent inter­molecular Schiff base formation with a second mol­ecule of 4-amino­anti­pyrine. The reaction only takes place in the presence of di­methyl­formamide.

A synchrotron powder X-ray diffraction study of commercially obtained ‘cerium(III) carbonate hydrate' indicates that multiple Ce-containing phases coexist, none of which are Ce₂(CO₃)₃. The majority phase is an ortho­rhom­bic phase of composition CeCO₃OH.

In the title compound, the aromatic rings are oriented at a dihedral angle of 83.30 (8)°. An intra­molecular C—H⋯O contact generates a five-membered S(5) ring motif. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules through R¹₂(6), R²₂(10), R²₂(14) hydrogen-bond motifs.

Liquid-assisted grinding (LAG) and microwave synthesis are proposed as alternative routes for the synthesis of cryptands, with reaction times of up to 16 times faster than traditional methods.

We have isolated and structurally chracterized 2,2-di­chloro-3,3-dieth­oxy-1-(4-fluoro­phen­yl)propan-1-ol by simple hy­dro­genation of 2,2-di­chloro-3,3-dieth­oxy-1-(4-fluoro­phen­yl)propan-1-one. Hirshfeld surface analysis was performed.