diazine การใช้

Uracil derivatives containing a diazine ring are used in pesticides.
Substitution of one C H in pyridine with a second N gives rise to the diazine heterocycles ( C 4 H 4 N 2 ), with the names pyridazine, pyrimidine, and pyrazine.
The first reaction in the sequence is a DA INV reaction between the tetrazine and vinyl acetal, followed by a retro-Diels Alder reaction to afford a 1, 2-diazine product.
The compounds can also be called " 2-hydroxypyrimidine " or " 4-hydroxypyrimidine " respectively, based on a substituted pyrimidine, or 1, 3-diazine, ring.
In 1980, the pentamethylcyclopentadienyl ligand, C 5 Me, was introduced to prepare the lanthanide complexes with all metals in the series . and ( C 5 Me 5 ) 2 Sm, making a breakthrough in f-block metallocenes, since both of these two organosamarium ( II ) complexes were unexpectedly found to participate in the coordination, activation and transformation of a variety of unsaturated compounds, including olefins, internal alkynens, phosphaalkynes, carbon monoxide, carbon dioxide, isonitriles, diazine derivatives, imines and polycyclic aromatic hydrocarbons ( PAHs ).