Cycloadditions of 1,3-oxazolium-4-olates (isomünchnones) by rhodium(II)-induced decomposition of α-diazocarbonyl derivatives of (5R)- and (5S)-phenyloxazin-3-one as a chiral template
作者:Richard Angell、Marion Fengler-Veith、Harry Finch、Laurence M. Harwood、Toby T. Tucker
DOI:10.1016/s0040-4039(97)00918-0
日期:1997.6
Cycloadducts (6–9) were synthesised from isomünchnone derivatives of (5R)- and (5S)-phenyloxazin-3-one by rhodium(II)-catalysed decomposition of α-diazocompounds (3a-c). Additions to various carbon-carbon dipolarophiles proceeded with high and moderate diastereofacial selectivities.