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tert-Butyl N-{2-[N-(N,N′-dicyclohexylureidocarbonylethyl)carbamoyl]prop-2-yl}carbamate (2000)

Banerjee, Rahul ; Maji, Samir Kumar ; Banerjee, Arindam

Oxford [u.a.] : International Union of Crystallography (IUCr)

Acta crystallographica 56 (2000), S. 1120-1121

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ISSN: 1600-5759

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Chemistry and Pharmacology , Geosciences , Physics

Notes: The title compound, C25H44N4O5, exhibits a turn with the main chain reversing direction, held together by an intramolecular N—H...O hydrogen bond. In the urea fragment, a notable amide C—N bond between the carboxyl C and the tertiary N atom shows marked single-bond character [1.437 (2) Å]. The dihedral angle of the β-alanyl residue, centrally located in the turn, is gauche [69.2 (2)°]. The packing is mediated by two intermolecular hydrogen bonds and van der Waals contacts involving the methyl moieties and the cyclohexyl rings.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0108270100007447

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