Bisnucleophilic Substitution as a Synthetic Tool for Ready Access to the Piperidine Alkaloids (+)-Connine, (+)-β-Conhydrine, (+)-8-Ethylnorlobelol, and (–)-Halosaline - Raju, Galla; Anitha, Kadimi; Krishna, Palakodety Radha (Synlett, 2015)