Starting from the commercially available (S)-1-phenylethylamine and L-alanine benzylester, we synthesised the homochiral N-alkenoyl aryl azides 2a-2d. The intramolecular cycloaddition of unsubstituted 2a and ab gave enantiopure 3.3a-dihydro-1,2,3-triazolo[1.5-a][1.4]benzodiazepine-4(6H)-ones 3a, 3b, 4a and 4b, while phenyl-substituted 2c and 2d gave enantiopure 1.1a-dihydro-2H-azirino[2.1-c][1,4]benzodiazepine-4(6H)-ones 5c, 5d, 6c and 6d. (C) 2001 Elsevier Science Ltd. All rights reserved.

Stereoselective intramolecular cycloadditions of homochiral N-alkenoyl aryl azides / G. Broggini, L. Garanti, G. Molteni, T. Pilati. - In: TETRAHEDRON-ASYMMETRY. - ISSN 0957-4166. - 12:8(2001), pp. 1201-1206. [10.1016/S0957-4166(01)00190-2]

Stereoselective intramolecular cycloadditions of homochiral N-alkenoyl aryl azides

G. Molteni;
2001

Abstract

Starting from the commercially available (S)-1-phenylethylamine and L-alanine benzylester, we synthesised the homochiral N-alkenoyl aryl azides 2a-2d. The intramolecular cycloaddition of unsubstituted 2a and ab gave enantiopure 3.3a-dihydro-1,2,3-triazolo[1.5-a][1.4]benzodiazepine-4(6H)-ones 3a, 3b, 4a and 4b, while phenyl-substituted 2c and 2d gave enantiopure 1.1a-dihydro-2H-azirino[2.1-c][1,4]benzodiazepine-4(6H)-ones 5c, 5d, 6c and 6d. (C) 2001 Elsevier Science Ltd. All rights reserved.
Settore CHIM/06 - Chimica Organica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/187731
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