>>12803045my guess is that with chlorine gas, more like hydrogen chloride actually, the acetone will form meaningful relationships with various portions of the parent molecule in similar positions increasing with chlorination.
My contenders are as follows:
A. One of the pi bonds on the benzene rings, then the other
B. Something happens at the amine group. I don't know what
C. Attaches at the back of it's neck there on the methoxy
D. The armpit
E. methyl
Then also after each preferred slot is filled the propylations continue onward to their next advance