Reaction of pyridoxal and its azomethines with hydrophosphoryl compounds cases, the products of addition are hydrolytically unstable and stabilize by
forming internal betaine
The structure of 1-phenyl-3-methyl-4-benzoylpyrazol-2-in-5-selenone and its derivatives-benzoylpyrazol-2-in-5-selenone exists in
a SeH-
tautomeric form in the solid phase. Crystal and molecular