A Cyclic Diaminocarbene with a Pyramidalized Nitrogen Atom: A Stable N-Heterocyclic Carbene with Enhanced Electrophilicity
نویسندگان
چکیده
منابع مشابه
A stable four-membered N-heterocyclic carbene.
The synthesis of the first four-membered N-heterocyclic carbene is described. Depending on the substituents on the nitrogen atoms, it is possible to characterize at room temperature the carbene dimer or the free carbene. Crystallographic analyses are provided for these carbene species.
متن کاملA stable crystalline N-heterocyclic carbene with a 1,1'-ferrocenediyl backbone.
A stable six-membered N-heterocyclic carbene with a redox-active ferrocene-based backbone was prepared, characterised by X-ray crystallography and utilised as a ligand for the preparation of expected and unexpected metal complexes.
متن کاملA persistent P,N-heterocyclic carbene.
Conjugate acids of cyclic (amino)(phosphino)carbenes (P-NHCs) have been prepared, and several different processes have been observed during their deprotonation, which include the formation of a metastable P-NHC, an azomethine ylide, and a bicyclic phosphirane.
متن کاملCopper complexes of nitrogen-anchored tripodal N-heterocyclic carbene ligands.
Incorporation of a nitrogen functionality into a tripodal N-heterocyclic carbene ligand system affords the first N-anchored tetradentate tris-carbene ligands TIMEN(R) (R = Me (5a), t-Bu (5b), Bz (5c)). Treatment of the methyl derivatized [H(3)TIMEN(Me)](PF(6))(3) imidazolium salt (H(3)5a) with silver oxide yields the silver complex [(TIMEN(Me))(2)Ag(3)](PF(6))(3) (9), which, in a ligand transfe...
متن کاملNitron: a stable N-heterocyclic carbene that has been commercially available for more than a century.
The analytical reagent Nitron is a mesoionic compound whose structure consists of a cationic triazolium unit with an anionic PhN substituent. We provide clear evidence for the existence of a singlet diaminocarbene tautomer whose structure is composed of a 1,2,4-triazol-5-ylidene unit bearing an NHPh substituent.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2012
ISSN: 1433-7851
DOI: 10.1002/anie.201202137