It is that up'-biscarbenes, generated from the corresponding bisdiazo derivatives 1 b, are
stable compounds; however, from their reactivity they must be regarded as alkynes rather …

Abstract Bis [1, 3‐diphenyl‐2‐imidazolidinylidene]‐shows a considerable tendency towards
dissociation into two carbenes. Reactions with this easily accessible carbene source lead to …

COMMUNICATIONS Page 1 COMMUNICATIONS (quantitativc yield. eluent. CH,CI,,EtOH
IOOjl to 1OO/S vp). [tCu]+BF: (C,,,,H,,,N,O,,CuBF)- dark brown-red solid. FAB-MS : m/z: 1793.5 …

Is it possible to coordinate two donor ligands L to a carbon (0) atom, and what would be the
properties of such a carbon atom? These questions have been of interest to chemists for …

After early studies by Wanzlick)'] the chemistry of stable carbenes underwent a revival in
1991 with the structural characterization of 1 (R= 1-adamantyl). Iz] Stable carbenes such as …

Persistent (Amino)(Silyl)Carbenes | Journal of the American Chemical Society ACS ACS
Publications C&EN CAS Find my institution Log In Journal of the American Chemical Society …

N-Heterocyclic carbenes (NHCs) are defined as singlet carbenes, in which the divalent
carbenic center is connected directly to at least one nitrogen atom within the heterocycle. 1 …

Depending on the nature of the substituents and the experimental conditions used, transient
or stable phosphinocarbenes are generated from the corresponding-diazophosphines. Of …

(Amino)(phosphino) carbenes are stable due to the donation of the nitrogen lone pair, the
phosphino group remains strongly pyramidalized. Reactions can be performed selectively at …

Tetrahedral intermediates resulting from the addition of nucleophiles to carboxylic acid
derivatives are important, short-lived species in acyl-transfer reactions.[1] As a result of their …