5-Azido-2,3,4-tri-Obenzoyl-5-deoxy-D-xylose diethyl dithioacetal (3) undergoes smooth Lewis acid-catalyzed demercaptalation (boron trifluoride etherate/HgO) to afford the unstable aldehydo-azide 4, which in the presence of Lewis acids yields the tribenzoate 6 of the title compound (7) via an apparent intramolecular Schmidt rearrangement.
5-Azido-2,3,4-tri-Obenzoyl-5-deoxy-D-xylose diethyl dithioacetal (3) undergoes smooth Lewis acid-catalyzed demercaptalation (boron trifluoride etherate/HgO) to afford the unstable aldehydo-azide 4, which in the presence of Lewis acids yields the tribenzoate 6 of the title compound (7) via an apparent intramolecular Schmidt rearrangement.
Synthesis of 1,5-dideoxy-1,5-imino-d-xylonolactam VIA acid-catalyzed intramolecular schmidt rearrangement
作者:Peter Norris、Derek Horton、Brett R. Levine
DOI:10.1016/0040-4039(95)01654-z
日期:1995.10
5-Azido-2,3,4-tri-Obenzoyl-5-deoxy-D-xylose diethyl dithioacetal (3) undergoes smooth Lewis acid-catalyzed demercaptalation (boron trifluoride etherate/HgO) to afford the unstable aldehydo-azide 4, which in the presence of Lewis acids yields the tribenzoate 6 of the title compound (7) via an apparent intramolecular Schmidt rearrangement.