Collect. Czech. Chem. Commun.
1989, 54, 2721-2730
https://doi.org/10.1135/cccc19892721
Preparation and synthetic utilization of diarylmethylenemalonaldehydes
Vladimír Král, Ladislav Jelínek and David Šaman
Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
Abstract
A general synthetic approach to disubstituted methylenemalonaldehydes consisting in reaction of geminal dihalogeno derivatives with 1,3-bis(dimethylamino)trimethinium perchlorate is described. Solution of the prepared compounds has been determinated by NMR spectroscopy. The prepared compounds were utilized as suitable synthons of pyrazole (XII), 4H-1,2,6-oxadiazine (XIV) and diazepine (XV) derivatives.
