Cis- and trans-configurations of α,α′-disubstituted piperidines and pyrrolidines by GC-FTIR; application to decahydroquinoline stereochemistry
作者:H. Martin Garraffo、Lara D. Simon、John W. Daly、Thomas F. Spande、Tappey H. Jones
DOI:10.1016/s0040-4020(01)89276-0
日期:1994.1
GC-FTIR spectroscopy provides a convenient, rapid method to distinguish cis- and trans-α,α′-disubstituted piperidines and pyrrolidines; the pyrrolidines usually first require N-methylation. Cis-isomers exhibit significant Bohlmann bands, trans-isomers only very weak bands. The method is also applicable to alkaloids containing a piperidine ring. For example, a 2-propyl-5-methyldecahydroquinoline, named