The `IUPAC` name of `PhCH=CHCOPh` is

Options

A. (1)`1,3`-diphenylprop-`2`-en-`1`-one
B. (2) `1`-benzoyl-`2`-phenylethene
C. (3) `1,3`-diphenyl-`1`-propen-`3`-one
D. (4) benzyylideneacetophenone

Answer

A

Explanation

The principal function is group while `C=C` bond is a secondary function. Thus, the compound should be named as an alkenone:
`Ph-underset("1,3-Diphenylprop-2-en-1-one")(underset(3)(CH)=underset(2)(CH)-underset(1)overset(O)overset(||)(C)-Ph`