文献索引:Smeets, J. W. H.; Visser, H. C.; Kaats-Richters, V. E. M.; Nolte, R. J. M. Recueil des Travaux Chimiques des Pays-Bas, 1990 , vol. 109, # 3 p. 147 - 153
Fig. and concave terized'"'. Building block 4 was prepared with four tails, terminated with chlorine groups, by reaction with a slight excess of 1-chloro-2-tosylethane (5) and potassium carbonate as a base in DMSO. Compound 7 was obtained in 70% yield. Similarly, treatment of 4 with a slight excess of l-(2-chloroethoxy)-2-tosylethane (6) and powdered KOH as a base in DMSO yielded compound 8 in 74% yield. Compounds 7 and 8 were allowed to ...