A Structurally Characterized Fluoroalkyne. (23rd May 2017)

• Record Type: Journal Article
• Authors: Hall, Lewis M.; Tew, David P.; Pridmore, Natalie E.; Whitwood, Adrian C.; Lynam, Jason M.; Slattery, John M.
• Is Part Of: Angewandte Chemie. Volume 129:Number 26(2017)
• Page Start: 7659
• Page End: 7664
• Publication Date: 2017-05-23
• Subjects: Alkine -- Alkinyle -- Elektrophile Fluorierung -- Fluor -- Vinylidene; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201702401
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The facile synthesis of a stable and isolable compound with a fluoroalkynyl group, M−C≡CF, is reported. Reaction of [Ru(C≡CH)(η 5 ‐C5 Me5 )(dppe)] with an electrophilic fluorinating agent (NFSI) results in the formation of the fluorovinylidene complex [Ru(=C=CHF)(η 5 ‐C5 Me5 )(dppe)][N(SO2 Ph)2 ]. Subsequent deprotonation with LiN(SiMe3 )2 affords the fluoroalkynyl complex [Ru(C≡CF)(η 5 ‐C5 Me5 )(dppe)]. In marked contrast to the rare and highly reactive examples of fluoroalkynes that have been reported previously, this compound can be readily isolated and structurally characterized. This has allowed the structure and bonding in the CCF motif to be explored. Further electrophilic fluorination of this species yields the difluorovinylidene complex [Ru(C=CF2 )(η 5 ‐C5 Me5 )(dppe)][N(SO2 Ph)2 ].