Carbon-13 NMR spectroscopy of someStrychnos alkaloids. Part 2
摘要:
Abstract13C NMR data for a series of natural and semi‐synthetic ar‐hydroxy‐ and ‐methoxy‐substituted Strychnos alkaloids are presented and are used to determine substituent‐induced chemical shift (SCS) values for the various substitution patterns.
The asymmetric coupling of various phenol or aniline derivatives with bulky aryllead triacetates was thoroughly investigated using optically active amines, including strychnine and brucine. We found that conformationally restricted tertiary amines, as well as lithium aryloxides and molecular sieves, are essential for accelerating the rate of phenol coupling. Consequently, the reaction can be carried
Carbon-13 NMR spectroscopy of someStrychnos alkaloids. Part 2
作者:R. Verpoorte、T. A. van Beek、R. L. M. Riegman、P. J. Hylands、N. G. Bisset
DOI:10.1002/mrc.1270220514
日期:1984.5
Abstract13C NMR data for a series of natural and semi‐synthetic ar‐hydroxy‐ and ‐methoxy‐substituted Strychnos alkaloids are presented and are used to determine substituent‐induced chemical shift (SCS) values for the various substitution patterns.