Compounds and methods based on [1.1.1]propellane

Details Compounds and methods based on [1.1.1]propellane Compounds and methods based on [1.1.1]propellane

1992-08-10

1995-04-11

Wu, Shean

Compositions

Liquid crystal compositions

558432, 560129, 560147, 560152, 568379, 570130, 570187, 570188, 585 23, 25229963, C07C25500, C07C 1336, C09K 1952

Patent

active

054055504

ABSTRACT:
Molecular bulding beams, liquid crystals, and surfactants in the form of compounds based on [1.1.1]propellane, including poly[1.1.1]propellanes. Molecular building beams having a telomeric or polymeric chain staff, and linking groups functionalized on one or both ends of the staff. A system for linking the beams to connecting units to construct molecular structures of various forms, such as whips, combs, scaffoldings, nets, or stars. Other broad aspects of the invention provide liquid crystals and surfactants. The liquid crystals include telomeric or polymeric compounds functionalized with flexible end groups, while the surfactant compounds are functionalized with surface active end groups. Methods of synthesizing the various compounds ar also provided.

REFERENCES:
Schluter, (1988) Macromolecules 1988, 21, No. 5 at pp. 1208-1211.
Bunz, et al., "Bridgehead-coupled bicyclo[1.1.1]pentanes: synthesis and structure", Chemical Abstracts, vol. 109, No. 230356u (1988).
Patrick, et al, "Replacement of the carboxylic acid function with fluorine", Can. J. Chem., vol. 64, pp. 138-141 (1986).
Wiberg, et al., "[1.1.1]Propellane: Reaction With Free Radicals", Tetrahedron Letters, vol. 27, No. 14, pp. 1553-1556 (1986).
Belzner, et al., "Tetracyclo[5.1.0.0.sup.1,6.0.sup.2,7 ]Octane: Some Unexpected Addition Reactions and a New Synthesis", Tetrahedron Letters, vol. 28, No. 27, pp. 3099-3102 (1987).
Bunz, et al Chem. Ber. 121, 1785, 1988.
Raszynski et al J. Am. Chem. Soc. 110, 5225, 1988.
Applequist et al J. Org. Chem. 47, 4985, 1982.
Bunz et al Manuscript: Synthesis and Structure . . . .

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