In an article, author is Zhang, Li-Xin, once mentioned the application of 35000-38-5, Safety of tert-Butyl 2-(triphenylphosphoranylidene)acetate, Name is tert-Butyl 2-(triphenylphosphoranylidene)acetate, molecular formula is C24H25O2P, molecular weight is 376.43, MDL number is MFCD00075545, category is Isoxazoles. Now introduce a scientific discovery about this category.
4-(4-Methoxyphenyl)-3-methyl-1,6-dioxa-2,8-diaza-s-indacen-5(7H)-one
In the molecule of the title compound, C16H12N2O4, the pyridine ring is oriented at the same dihedral angle of 2.92 (3)degrees with respect to the furan and isoxazole rings, while the dihedral angle between furan and isoxazole rings is 1.34 (3)degrees. The dihedral angle between the benzene and pyridine rings is 53.23 (3)degrees. In the crystal structure, intermolecular C-H center dot center dot center dot O interactions link the molecules into chains. Weak pi-pi contacts between isoxazole and benzene rings [centroid-centroid distance = 3.969 (3) angstrom] may further stabilize the structure.
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Reference:
Isoxazole – Wikipedia,
,Isoxazole | C3H3NO – PubChem