Transformation of 4-nitroalkane-1,7-diones into pyrrolizidines
摘要:
Depending on the conditions the reduction of 5-nitropentadecane-2,8-dione (4) gave as main products the two isomeric pyrrolizidines 1a (xenovenine, NaBH3CN/NH4OAc; as N-15-1a with NaBH3CN/(NH4OAc))-N-15 and 1b (H-2-Pd/C), respectively.