Treatment of cyclopentane-1,3-dione with iodomethane in the presence of base leads mainly to a mixture of three products. 

(a) Give a mechanistic description of how these three products are formed. 

(b) Reaction of product C with a cuprate reagent results in loss of the methoxy group. For example, 

Suggest a mechanism for this reaction, which is another synthetic route to enones substituted at the β-carbon

Transcribed Image Text:

CH3 CH3 NaOH, CHJ, CH,CHОН + CH3 OCH; A B