1358751-22-0Relevant academic research and scientific papers
Versatile 1,2- and 1,3-dipole behavior of the 1-arsa-3-germaallene Tip(t -Bu)Ge=C=AsMes*: Formation of a heterocyclic arsa(germa)carbene (AsGeHC)
Ghereg, Dumitru,Sotiropoulos, Jean-Marc,Escudie, Jean,Miqueu, Karinne,Matioszek, Dimitri,Ladeira, Sonia,Saffon-Merceron, Nathalie
, p. 930 - 940 (2012/04/04)
The 1-arsa-3-germaallene Tip(t-Bu)Ge=C=AsMes* (1; Tip = 2,4,6-triisopropylphenyl, Mes* = 2,4,6-tri-tert-butylphenyl) reacts with selenium, fluorenone, N-tert-butylphenylnitrone, and 9,10-phenanthrenequinone as a 1,2-dipole by the Ge=C double bond, to give the corresponding three-, four-, five-, and six-membered-ring derivatives 2-5, respectively. Both [2 + 2] and [2 + 4] cycloadditions involving the Ge=C double bond are observed between 1 and benzil, leading to the four- and six-membered-ring derivatives 6 and 7. In great contrast, 1 reacts with diphenylketene as a 1,3-dipole by the whole Ge=C=As unit to afford the transient heterocyclic arsa(germa)carbene 12 according to a [3 + 2] cycloaddition. DFT calculations were carried out to understand this particular behavior. This first heavier analogue of an NHC with an arsenic atom rearranges to the tricyclic compound 11.
