The title anions are alkylated and acylated ( a series only) exclusively at the a position. The a-phenylthio products give y-phenylthio compounds by the [1,3]PhS shift and the PhS group may be removed from the products in a number of ways.Extended enolates 1-7 (2) derived from unsaturated esters (1) usually react with electrophiles such as alkyl halide^,'^*^-' aldehyde^,^ Michael acceptors,' 7 * 1 and sulphenylating agent^,^.'^,^^ at the a carbon atom to give (3) though
The alkylation of anions from saturated and unsaturated ketones is described. a-Phenylthio enones (1) and the related esters (2) are in demand as Michael Diels-Alder dien~philes,~ and annelating agents.8 We report the synthesis of examples of these compounds which we have used to make extended enolate anions.9* O
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