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Answer 1 · 2016-08-06T22:41:42

Here's how to figure out the structure of 1-(2-methoxyphenyl)-3-phenylpropane-1,3-dione.

Step 1

The base name "propane" tells you that the main chain contains three carbon atoms:

#"-C-C-C-"#

Step 2

The ending "1,3-dione" tells you that there are #"C=O"# groups at #"C1"# and #"C3"#:

#"-COCH"_2"CO-""#.

Step 3

The "3-phenyl" tells you that there is a phenyl group attached to #"C3"#:

#"-COCH"_2"COC"_6"H"_5#

Step 4

Finally, the "1-(2-methoxyphenyl)" tells you that there is a 2-methoxyphenyl group on #"C-1"#.

The structure is

Dione
(From pubchem.ncbi.nlm.nih.gov)