- FRICTIONLESS MOLECULAR ROTARY MOTORS
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A rotaxane consisting of a cucurbituril and an uncharged guest molecule, having low or null affinity therebetween is provided as well as processes for providing the same. Various uses as energy converters (“frictionless” molecular motors), biochips and biosensors using the same are also provided.
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Page/Page column 28-29
(2010/02/17)
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- Palladium-catalyzed intramolecular arylation of N-benzyl-2-iodoimidazoles: A facile and rapid access to 5H-imidazo[2,1-α]isoindoles
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The first example of a Pd-catalyzed intramolecular arylation involving the C-2 position of an imidazole ring is presented. Application of this reaction led to the formation of 5H-imidazo[2,1-a]isoindole in one step from N-benzyl-2-iodoimidazole. Microwave irradiation enhanced the rate of reaction allowing the synthesis of various imidazo[2,1-a]isoindole analogues. Georg Thieme Verlag Stuttgart.
- De Figueiredo, Renata Marcia,Thoret, Sylviane,Huet, Caroline,Dubois, Joelle
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p. 529 - 540
(2007/12/29)
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- Remarkable Selectivity in the Reaction of 1-Trityl-2-lithioimidazoles with t-Butyl Halogenoacetates
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2-Lithio-1-triphenylmethylimidazoles react with t-butyl halogenoacetates to give a variety of products, the nature of which is cleanly determined by the halogen atom.With chloroacetate the products are chloromethyl ketones, while bromacetate gives di-t-butyl imidazolesuccinates, and iodoacetate yields iodoimidazoles.In each case 50percent of the parent triphenylmethylimidazole is recovered from the reaction.When the triphenylmethyl substituent is replaced by the N,N-dimethylsulfamoyl group, reaction with bromoacetate is suppressed, but t-butyl chloroacetate and iodoacetate again give chloroketones and aryl iodides respectively.
- Coutts, Ian G. C.,Jieng, Shende,Khandelwahl, Ghanshyam D.,Wood, Michael L.
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p. 857 - 860
(2007/10/02)
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