The [2+2] Staudinger cycloadditive route to enantiopure azetidino[4,1-d][1,4]benzooxazepines
摘要:
The [2+2] Staudinger cycloaddition between the C=N double bond of 2,3-dihydrobenzoxazepines 2 and 6 and a series of acetyl chlorides gave the azetidino[4,1-d][1,4]benzo oxazepines 3 and 7, 8, respectively. In the case of enantiopure 6, the cycloaddition diastereoselectivity was markedly dependent from the substituent alpha to the imine. (C) 2004 Elsevier Ltd. All rights reserved.
The [2+2] Staudinger cycloadditive route to enantiopure azetidino[4,1-d][1,4]benzooxazepines
摘要:
The [2+2] Staudinger cycloaddition between the C=N double bond of 2,3-dihydrobenzoxazepines 2 and 6 and a series of acetyl chlorides gave the azetidino[4,1-d][1,4]benzo oxazepines 3 and 7, 8, respectively. In the case of enantiopure 6, the cycloaddition diastereoselectivity was markedly dependent from the substituent alpha to the imine. (C) 2004 Elsevier Ltd. All rights reserved.