Intramolecular Carbolithiation Reactions for the Preparation of Azabicyclo[2.2.1]heptanes
作者:Iain Coldham、Joan-Carles Fernàndez、Kathy N. Price、David J. Snowden
DOI:10.1021/jo000088z
日期:2000.6.1
1]heptane ring system is accessed from either diastereomer of a 2,5-disubstitutedpyrrolidine, via a chiral organolithium intermediate. The 2-azabicyclo[2.2.1]heptane ring system is formed stereoselectively in low yield by a tandem cyclization, together with the product from monocyclization. Better yields of the 2-aza ring system can be obtained using an alternative approach from a 2-tributylstannyl-4-allylpyrrolidine