Syntheses and Reactions of Alkylthio- and Arylthio-Substituted 1,6-Methano[10]annulenes
作者:Amanda C. Bryant-Friedrich、Richard Neidlein
DOI:10.1002/hlca.19970800113
日期:1997.2.10
bromo-substituted 1,6-methano[10]annulenes with sodium thiolates in DMF provides easy access to alkylthio- and arylthio-substituted 1,6-methano[10]annulenes (Schemes 2-4). These compounds are then brominated with N-bromosuccinimide (NBS) to study their reactivity in electrophilicsubstitution reactions (Schemes 5 and 6). The resulting brominated thio-1,6-methano[10]annulenes are, in a subsequent reaction
10-Diferrocenyl- and 2,5,7,10-tetraferrocenyl-1,6-methano[10]annulenes, in which the ferrocene nuclei are held proximate and cofacial, have been synthesized by using the palladium-catalyzed cross-coupling reaction of ferrocenylzinc chloride with 2,10-dibromo- and 2,5,7,10-tetrabromo-1,6-methano[10]annulenes. The structures of the face-to-face fixed ferrocene systems were determined by X-ray analysis. Cyclic voltammetric
Synthesis, structure and some properties of 2,5,7,10-tetraiodo-1,6-methano[10]annulene
作者:K. D. Sturm、F. Wudl、J. Lex
DOI:10.1021/jo00003a012
日期:1991.2
The title compound (1a) was prepared by a two-step procedure via an organomercurial. Both 1a and its 11,11-difluoro analogue are crystalline solids that were fully characterized. The tetraiodidle 1a is unusual in that the aromatic character of the pi periphery is almost destroyed as determined from ring current effects on the 11,11 hydrogen atoms. The crystal structure of 1a is reported and it bears out the ''localization'' of the pi electrons with a concomitant opening of the transannular bridge angle.