Reactivity of Boryl- and Silyl-Substituted Carbenoids toward Alkynes: Insertion and Cycloaddition Chemistry

Autor: Simon Aldridge, Andrew D. Schwarz, Philip Mountford, Andrey V. Protchenko, Matthew P. Blake, Cameron Jones
Rok vydání: 2015
Předmět:
Zdroj: Organometallics. 34:2126-2129
ISSN: 1520-6041
0276-7333
DOI: 10.1021/om501252m
Popis: Three modes of reactivity of phenyl-substituted alkynes toward acyclic tetrelenes are reported, with reaction pathways found to be dependent not only on the nature of the group 14 element but also on the supporting ligand set. Systems featuring Sn–B or Ge–B bonds undergo insertion chemistry, forming borane-appended (vinyl)SnII and GeII species. With a bis(amido)stannylene, phenylacetylene acts as a protic acid, generating a SnII acetylide with a unique bridged structure. Reactivity toward a more strongly reducing SiII system is dominated by the possibility of accessing SiIV via [2 + 1] cycloaddition chemistry.
Databáze: OpenAIRE