By Daryle H. Busch (auth.), Christoph A. Schalley, Fritz Vögtle, Karl Heinz Dötz (eds.)
Overall this can be an attractive ebook that are supposed to trap the eye of researchers operating within the quarter of classical suprmolecular host-guest chemistry.
Eugene R. Zubarev, Rice college, JA0598356, J.AM.Chem.SOC., vol. 128, no.16, 2006
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Extra resources for Templates in Chemistry II: -/-
As we study the template that created the Borromean link or as we puzzle over the fate and/or uses of Vögtle’s dendrimerized knotanes- (perhaps serving as chiral tectons) we are like mountain climbers following a well-marked trail up to misty heights, but without the struggles of the first pioneering effort to reach those heights. History has value to researchers for many reasons: detailed knowledge accumulates and what was learned, if it was true, it still is true; it can inspire us and provide a basis for celebrating the advances of our fields; it can humanize our necessarily uncompromising encounter with experimental reality; it can guide us to not make the kinds of mistakes made by others; it shows us that the seemingly impossible challenges of today become the records of accomplishment in time.
A) Ogina H (1981) J Am Chem Soc 103:1303; b) Yamanari K, Shimura Y (1983) Bull Chem Soc Jpn 56:2283 32. Kim K (2002) Chem Soc Rev 31:96 33. Mock WL, Shih N-Y (1986) J Org Chem 51:4440 34. Busch DH, Burke JA, Jicha DC, Thompson MC, Morris ML (1963) Adv Chem Series 37:125 35. Schrauzer GN (1962) Ber 95:1438; Umland F, Thierig D (1962) Angew Chem 74:388 36. Curry JD, Busch DH (1964) J Am Chem Soc 86:592 37. a) Melson GA, Busch DH (1963) Proc Chem Soc 1963:223; b) Melson GA, Busch DH (1964) J Am Chem Soc 86:4830; c) Melson GA, Busch DH (1964) J Am Chem Soc 86:4834; d) Melson GA, Busch DH (1964) J Am Chem Soc 87:1706 38.
If rotaxanes were, at first, difficult to make, higher rotaxanes were a great challenge and this too has been overcome. Hydrogen-bonded templates provide good examples of the relative difficulty of synthesizing both - and rotaxanes. Stoddart and his collaborators used 1,2,3-triazole stoppered secondary ammonium axles and a symmetrical 1,4-phenylene linked 28crown8  to produce - and rotaxanes in yields of 30% and 10%, respectively, a difference that reflects the relative difficulty of rotaxane synthesis.