A synthetic method is presented for S−N bond formation starting from cheap and affordable materials. We show that (un)substituted N-protected cyclic eight-membered C2-symmetric sulfenamides have been prepared in a few steps using this procedure. The syntheticutility of these ambipolar derivatives was demonstrated in a variety of synthetic transformations affording different S,N-heterocyles of pharmaceutical
N-Protected 1,2-Oxazetidines as a Source of Electrophilic Oxygen: Straightforward Access to Benzomorpholines and Related Heterocycles by Using a Reactive Tether
A hitherto unknown reactivity of a strained four‐membered heterocycle, 1,2‐oxazetidine, is reported. When reacted with organometallic compounds, this reagent provides electrophilicoxygen with a nitrogen‐terminated two‐carbon‐atom tether. The synthetic versatility of the products obtained was demonstrated in various transformations, leading to efficient synthesis of six‐, seven‐, and eight‐membered
We report on the application of eight-membered C2-symmetric sulfenamide derivative as a new convenient and highly reactive electrophilic sulfur-nucleophilic nitrogen synthon for the concise synthesis of medium-ring S,N-heterocyclic systems.
Biaryl piperazinyl-pyridine analogues are provided, of the Formula:
wherein variables are as described herein. Such compounds are ligands that may be used to modulate specific receptor activity in vivo or in vitro, and are particularly useful in the treatment of conditions associated with pathological receptor activation in humans, domesticated companion animals and livestock animals. Pharmaceutical compositions and methods for using such compounds to treat such disorders are provided, as are methods for using such ligands for receptor localization studies.