New Substituent Effects of the Trimethylsilyl Group: Photochemistry of 3-Trimethylsilyl-2,5-cyclohexadienones and Preparation of 4-Alkylidenecyclopentenones
作者:Arthur G. Schultz、Larry O. Lockwood
DOI:10.1021/jo000209v
日期:2000.10.1
prepared from methyl 2-trimethylsilylbenzoate by the Birch reduction-alkylation reaction. Type A photorearrangements of 9a-g were regiospecific to give mixtures of two diastereomers of the corresponding 5-trimethylsilylbicyclo[3.1.0]hex-3-en-2-ones 11a-g. These bicyclohexenones are uniquely photostable; the diastereomers do not photointerconvert nor do they undergo the type B photorearrangement. Bicyclohexenones