中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(tert-Butyl-dimethyl-silanyl)-4-oxo-azetidine-2-carbaldehyde | 91939-52-5 | C10H19NO2Si | 213.352 |
—— | (R,S) 1-(t-butyldimethylsilyl)-4-(hydroxymethyl)-2-azetidinone | 188304-74-7 | C10H21NO2Si | 215.368 |
—— | (3R*,4S*)-1-(tert-butyldimethylsilyl)-3-acetyl-4-vinyl-azetidin-2-one | 77097-64-4 | C13H23NO2Si | 253.417 |
Hydroxylation of the enolates of several 3-alkylideneazetidin-2-ones with MoOPH leads to the formation of 3-hydroxy-3-alkenylazetidin-2-ones in fair to good yields. The products were formed with trans stereochemistry in the alkenyl moiety and a presumed trans relationship between the hydroxyl substituent and a 4-substituent. Hydrogenation leads to 3-alkyl-3-hydroxy-azetidin-2-ones. The prerequisite 3-alkylideneazetidin-2-ones were formed from 3-trimethylsilylazetidin-2-ones and aldehydes via a Peterson olefin synthesis.