Synthesis of new elementsubstituted derivatives of 3H-pyrrolizines
摘要:
The anion of 3H-pyrrolizine was isolated as its lithium 2a and thallium salts 3 and the anion of 1-methyl-3H-pyrrolizine as its lithium salt 2b. Reaction of the lithium anions with Group 14 electrophiles led to a number of substituted derivatives of the 3H-pyrrolizine ring system. In the case of 2b it was shown that the number of isomers obtained was strongly dependent on the reaction solvent. (C) 1998 Elsevier Science S.A. All rights reserved.