A new variation of the tandem inter [4 + 2]/intra [3 + 2] cycloaddition of nitroalkenes has been developed. This method involves the Lewis acid-promoted [4 + 2] cycloaddition of nitro olefins 12 with 1-alkoxy-1,4-dienes 3. The resulting nitronates 13, bearing a C(5) tethered dipolarophile, undergo thermal, intramolecular [3 + 2] cycloaddition to afford stable tricyclic nitroso acetals 14, which can be subsequently reduced to unveil a new carbocycle 16, Thus, in three steps, highly functionalized aminocyclopentanes can be stereoselectively constructed in high yield.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Organic Chemistry|
|State||Published - Sep 4 1998|
ASJC Scopus subject areas
- Organic Chemistry