中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(3-氧代环丁基)苯甲酸甲酯 | (3-oxocyclobutyl)methyl benzoate | 346425-59-0 | C12H12O3 | 204.225 |
A general method for the preparation of cyclopropanes is reported. Triplet-photosensitized reactions of a series of cyclobutanones give cyclopropanes as the major product. Part 1 describes the synthesis of substituted cyclobutanones used in this study. In Part 2, the photo-reactions of cyclobutanones are reported. Triplet-sensitized reactions of cyclobutanones using acetone as a sensitizer give cyclopropanes as the major non-polar products. The extent of photodecarbonylation seems to be dependent on α-substitution. Electron-donating groups promote decarbonylation while electron-withdrawing groups favour cycloelimination.Key words: photodecarbonylation, cyclobutanones, cyclopropanes, triplet-sensitization.