Journal of the American Chemical Society p. 7150 - 7167 (1984)
Update date:2022-08-05
Topics:
Cram, D. J.
Dicker, I. B.
Lauer, M.
Knobler, C. B.
Trueblood, K. N.
Five new spherands and three new hemispherands containing cyclic urea units have been designed and synthesized, and their binding properties have been examined.Formally, these macrocycles are composed by attaching to one another the following units: 2,6-disubstituted anisyl, or A; 2,6-disubstituted 4-methylanisyl, or A'; N,N-disubstituted tetrahydro-2-pyrimidinone, or U; 2,6-disubstituted 1-(allyloxy)-4-methylbenzene, or A'a; 2,6-disubstituted 1-(benzyloxy)-4-methylbenzene, or A'b; 2,6-disubstituted 4-methylphenol, or A'h; 1,2-disubstituted benzene, or B; and CH2 groups.Host structures and key intermediates are visualized by line formulas in which adjacent letters indicate bonded units.
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