5173. Isoflavone

Nomenclature

CAS number: 574-12-9
3-Phenyl-4H-1-benzopyran-4-one; 3-phenylchromone.
C15H10O2; mol wt 222.24.
C 81.07%, H 4.54%, O 14.40%.

Description and references

Prepn from o-hydroxyphenyl benzyl ketone, sodium dust and ethyl formate: Joshi, Venkataraman, J. Chem. Soc. 1934, 513. Structure: Warburton, Q. Rev. Chem. Soc. 8, 67 (1954).

Chemical structure

Properties

Leaflets and needles from petr ether, mp 148°. uv max: 245, 307 nm (log ε 4.41, 3.82).