Complexations between Oxacalixcrowns and Secondary Ammonium Salts and ­Construction of an Oxacalixcrown‐Based [2]Rotaxane. Issue 28 (14th August 2015)

• Record Type: Journal Article
• Authors: Liu, Hua; Hu, Wen‐Jing; Liu, Yahu A.; Li, Jiu‐Sheng; Jiang, Biao; Wen, Ke
• Is Part Of: European journal of organic chemistry. Issue 28(2015)
• Page Start: 6270
• Page End: 6277
• Publication Date: 2015-08-14
• Subjects: Supramolecular chemistry -- Host–guest systems -- Rotaxanes -- Crown compounds -- Calixcrowns -- Ammonium salts; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.201500893
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract: Pseudorotaxane type host–guest complex of a secondary ammonium salt and oxacalixcrown with the polyether linker as short as five ethylene glycol units was created. While an axle containing both ammonium and carbamate stations was installed in an oxacalixcrown‐6‐based [2]rotaxane through a threading‐followed‐by‐stoppering approach, translocation of the oxacalixcrown‐6 component of the [2]rotaxane from the secondary ammonium station to the carbamate station of the thread was achieved through blocking the amino moiety with a bulky Boc group. Abstract : A [2]rotaxane R1 (see Scheme) was constructed through a threading‐followed‐by‐stoppering approach. Translocation of the station from the secondary ammonium site to the carbamate site of the thread was achieved through blocking the amino moiety with a bulky Boc group.