Highly enantioselective creation of quaternary carbons in a halolactonization of bis-γ,δ-unsaturated carboxylic imides derived from a camphorsultam: Enantioselective synthesis of (+)-mesembrine
摘要:
Iodolactonization of symmetrical diene-carboxylic imides (3a,b), derived from a camphorsultam, afforded chiral lactones (5) and (6) possessing aromatic substituents on quaternary carbons in high enantioselectivity with moderate diastereoselectivity.
Highly enantioselective creation of quaternary carbons in a halolactonization of bis-γ,δ-unsaturated carboxylic imides derived from a camphorsultam: Enantioselective synthesis of (+)-mesembrine
摘要:
Iodolactonization of symmetrical diene-carboxylic imides (3a,b), derived from a camphorsultam, afforded chiral lactones (5) and (6) possessing aromatic substituents on quaternary carbons in high enantioselectivity with moderate diastereoselectivity.