Synthesis and structure of highly polarised double-bond compounds derived from S-proline
作者:R.Alan Aitken、Karamat Ali、Noemı́ de Elena、Philip Lightfoot
DOI:10.1016/s0040-4039(00)01372-1
日期:2000.10
Reaction of the chiral iminium salt 3 with stabilised carbanions gives the compounds 4-9 containing a highly polarised double bond. The extent of this polarisation is determined by variable temperature H-1 NMR studies, comparison of C-13 NMR chemical shifts and an X-ray structure determination. (C) 2000 Elsevier Science Ltd. All rights reserved.