An efficient procedure for the synthesis and isolation of (+)(2R,3R,11R,12R)- and (-)-(2S,3S,11S,12S)-tetraphenyl-18crown-6
An efficient procedure for the synthesis and isolation of (+)(2R,3R,11R,12R)- and (-)-(2S,3S,11S,12S)-tetraphenyl-18crown-6, (J. Crosby, M. E. Fakley, C. Gemmell, K. Martin, A. Quick, A. M. Z. Slawin, H. Shahriari-Zavareh, J. F. Stoddart, and D. J. Williams), Tetrahedron Lett. 1989, 30, 3849-3852.