Synthesis of substituted α-tetralones and substituted 1-naphthols via regioselective ring expansion of 1-acyl-1-indanol skeleton
摘要:
Substituted 1-acyl-1-indanols were prepared using the corresponding readily commercially available substituted indanones as starting materials. Treatment of each 1-acyl-1-indanol derivative with sodium methoxide in hot methanol furnished a regiospecific 2-hydroxy-alpha-tetralone derivative, which was an alpha-keto rearrangement product. Each substituted 2-hydroxy-alpha-tetralone then underwent dehydration to afford the corresponding 1-naphthol derivative. (C) 2011 Elsevier Ltd. All rights reserved.
Substituted 1-acyl-1-indanols were prepared using the corresponding readily commercially available substituted indanones as starting materials. Treatment of each 1-acyl-1-indanol derivative with sodium methoxide in hot methanol furnished a regiospecific 2-hydroxy-alpha-tetralone derivative, which was an alpha-keto rearrangement product. Each substituted 2-hydroxy-alpha-tetralone then underwent dehydration to afford the corresponding 1-naphthol derivative. (C) 2011 Elsevier Ltd. All rights reserved.
In(OTf)3 catalyzed regioselective acyloin rearrangement of 1-acyl-1-indanols
A highly regioselective catalytic acyloin rearrangement of 1-acyl-1-indanols has been successfully developed. A series of α-hydroxyl carbonyl derivatives have been obtained in moderate to good yields (up to 91%) in the presence of 5 mol% of In(OTf)3.