Yields of a rotaxane can be improved by employing a two-step capture protocol. Cooling a solution of the linear and macrocyclic components required for the rotaxane increases the population of the target pseudorotaxane, which is then captured by a rapid capping reaction between an azide and PPh3. The resulting iminophosphorane rotaxane can then be manipulated synthetically at elevated temperatures.
作者:Nurul Izzaty Hassan、Vicente del Amo、Ewen Calder、Douglas Philp
DOI:10.1021/ol1027915
日期:2011.2.4
Yields of a rotaxane can be improved by employing a two-step capture protocol. Cooling a solution of the linear and macrocyclic components required for the rotaxane increases the population of the target pseudorotaxane, which is then captured by a rapid capping reaction between an azide and PPh3. The resulting iminophosphorane rotaxane can then be manipulated synthetically at elevated temperatures.