Addition of Organolithium Reagents to Corannulene and Conformational Preferences in 1-Alkyl-1,2-dihydrocorannulenes
作者:Andrzej Sygula、Renata Sygula、Frank R. Fronczek、Peter W. Rabideau
DOI:10.1021/jo0258498
日期:2002.9.1
Addition of organolithiumreagents to corannulene (1) produces 1-R-1,2-dihydrocorannulenes (2), which can be easily converted to 1-R-corannulenes (3). Molecular mechanics (MM) calculations predict a slight pseudoequatorial preference for the small substituents in both exo and endo arrangements of 2, whereas bulky substituents are expected to favor strongly the exo-pseudoaxial location. X-ray diffraction