Reductive cross-coupling of aromatic aldehydes and ketones with aliphatic acid chlorides promoted by Mg turnings in DMF Lit room temperature brought about efficient C-acylation to afford the corresponding alpha-acyloxy-alpha-aryl ketones in good yields. Treatment of alpha-methoxy or alpha-acetoxyacetophenones under similar conditions gave the corresponding alpha-acyloxystyrenes exclusively. The reaction may be initiated by electron transfer from Mg to the carbonyl groups of the substrates. (C) 2002 Elsevier Science Ltd. All rights reserved.
FOTIN, V. V.;SHCHEPIN, V. V.;SINANI, S. V., ZH. ORGAN. XIMII, 24,(1988) N 9, S. 1934-1936