Stereoselective Amination of 5-Substituted γ-Lactones and γ-Lactams – A Convenient Route for the Preparation of 5-Substituted (3S,5S)-3-Acetylaminotetrahydrofuran-2-ones and (3S,5S)-3-Acetylaminopyrrolidin-2-ones
作者:Marko S'kof、Jurij Svete、Matej Kmetič、Simona Golič-Grdadolnik、Branko Stanovnik
DOI:10.1002/(sici)1099-0690(199907)1999:7<1581::aid-ejoc1581>3.0.co;2-2
日期:1999.7
5-Substituted (S)-tetrahydrofuran-2-ones (1a,b) and (S)-pyrrolidin-2-ones (1c,d) were transformed in three steps, by treatment with tert-butoxybis(dimethylamino)methane (Bredereck's reagent), followed by nitrosation and stereoselective catalytic hydrogenation, into the corresponding 5-substituted (3S,5S)-3-acetylaminotetrahydrofuran-2-ones (4a,b) and (3S,5S)-3-acetylaminopyrrolidin-2-ones (4c,d).
5-取代的 (S)-四氢呋喃-2-酮 (1a,b) 和 (S)-吡咯烷-2-酮 (1c,d) 通过用叔丁氧基双(二甲氨基)甲烷(Bredereck's试剂),然后进行亚硝化和立体选择性催化氢化,生成相应的 5-取代 (3S,5S)-3-乙酰氨基四氢呋喃-2-酮 (4a,b) 和 (3S,5S)-3-乙酰氨基吡咯烷-2-酮( 4c,d)。