A complete series of N-heterocyclic tetrylenes (Si–Pb) with a 1,1′-ferrocenediyl backbone enabled by 1,3,2-diazaborolyl N-substituents

Abstract

The first complete series of N-heterocyclic tetrylenes with a ring size ≠ 5 has been prepared by using bulky 1,3,2-diazaborolyl N-substituents.

Approach to the “Missing” Diarylsilylene: Formation, Characterization, and Intramolecular C–H Bond Activation of Blue Diarylsilylenes with Bulky Rind Groups

“…In the 1 As a preliminary step, investigations into the reactivity of the diarylsilylenes 3 have also been initiated. For example, upon treatment of the Et 2 O solution containing 3b with oxygen-free water at −20 • C, a silanol, (Eind) 2 SiH(OH) (5b), was obtained as the major product in a 44% isolated yield (Scheme 2) [46,47]. The identification of 5b was supported by the spectroscopic data [Figures S11-S14], while the molecular structure was validated by the SC-XRD analysis (Figure 8).…”

Ligand-enforced geometric constraints and associated reactivity in p-block compounds

“…134 Similar stannylenes and plumbenes featuring wide angles have also been accessed using this strategy. 135–137…”

A bromo(boryloxy) silylene and its heavier analogues

“…Note that the diamine [(HCNDipp) 2 BNHCH 2 ] 2 has previously been used to stabilize subvalent group 14 compounds 20,21 and further that the diazaboryl substituent (HCNDipp) 2 B ( {B} ) has broadly served as a substituent in sub-valent main group chemistry. 22–24 For the current work we converted {B}* Br into the borinic acid {B}* OH by stirring {B}* Br in toluene with triethylamine and water. Isolated {B}* OH was subsequently deprotonated with benzyl potassium in n -hexane or toluene, with brief ultra-sonification, to give {B}* OK in quantitative yield.…”