Herein, we report the reactions of an Fe (II) imido complex [Ph2B (t BuIm) 2Fe═ NDipp]−(1)
with internal alkynes and isobutyronitrile, affording the Fe amido allenyl complexes [Ph2B (t …

This personal account summarizes our work on the chemistry of transition-metal-containing
metallabenzynes, organometallic compounds derived from formal replacement of a C atom …

Abstract The C C coupling of aryl nitriles at Group 4 metallocenes leads to unusual ring‐
strained 1‐metalla‐2, 5‐diaza‐cyclopenta‐2, 4‐dienes. The structural, energetic, and …

Zirconium-mediated multicomponent reactions of silyl-butadiynes with two molecules of aryl
nitriles are described, which provide rapid access to polysubstituted pyrimidines in a …

Main observation and conclusion The reaction of a cyclic osmacarbyne complex with
sodium azide led to the formation of a ring expansion‐annulation product, a unique tetrazole …

Although the reaction of metallacyclopropenes toward alkyl and aryl nitriles has been
extensively studied, their reactivity toward other types of nitriles, eg, benzyl and benzoyl …

Polarity reversal, or “umpolung”, is a widely acknowledged strategy to allow organic
functional groups amenable to react in alternative ways to the usual preference set by their …

The reactions of the Group 4 metallocene alkyne complexes,[Cp* 2M (η2‐
Me3SiC2SiMe3)](1 a: M= Ti, 1 b: M= Zr, Cp*= η5‐pentamethylcyclopentadienyl), with the …

Reactions of Group 4 metallocene alkyne complexes [Cp′ 2M (η2‐Me3SiC2SiMe3)](1: M=
Zr, Cp′= Cp*= η5‐pentamethylcyclopentadienyl; 2 a: M= Ti, Cp′= Cp*, and 2 b: M= Ti …

Ti (OiPr) 4/2 nBuLi-mediated highly efficient cross-coupling reactions of 1, 3-butadiynes with
α-iminonitriles are described. The method provides convenient access to functionalized 3 …