Group 6 carbene complexes derived from lithiated azoles and the crystal structure of a molybdenum thiazolinylidene complex


Autoria(s): Raubenheimer, HG; Stander, Y; Marais, EK; Thompson, C; Kruger, GJ; Cronje, S; Deetlefs, M
Data(s)

30/11/1999

Resumo

<p>Fischer-type (alkoxy)azolyl carbene complexes and Ofele-Lappert-type azolylinylidene complexes were synthesised by reaction of 1-phenylpyrazol-3 -yllithium, 4-methylthiazol-2-yllithium, benzothiazol-2-yllithium, 1-methylimidazol-2-yllithium with M(CO)(5)L (L = CO, THF or Cl-; M = Cr, Mo or W) and subsequent alkylation with CF3SO3CH3. The alkylation of Fischer-type carbene complexes containing an azolyl as the organic substituent proceeded via ring opening of tetrahydrofuran. When the alkylation is carried out in THF, the carbocation CH3O(CH2)(4)(+) acts as an electrophile. Protonation rather than alkylation of coordinated imidazolyl furnished cyclic imine complexes. Changing the donor atom of a coordinated thiazole from N to C by deprotonation and alkylation afforded a carbene complex. (C) 1999 Elsevier Science S.A. All rights reserved.</p>

Identificador

http://pure.qub.ac.uk/portal/en/publications/group-6-carbene-complexes-derived-from-lithiated-azoles-and-the-crystal-structure-of-a-molybdenum-thiazolinylidene-complex(74434bf2-3666-4f42-bb6e-290fca4067c9).html

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Raubenheimer , H G , Stander , Y , Marais , E K , Thompson , C , Kruger , G J , Cronje , S & Deetlefs , M 1999 , ' Group 6 carbene complexes derived from lithiated azoles and the crystal structure of a molybdenum thiazolinylidene complex ' Journal of organometallic chemistry , vol 590 , no. 2 , pp. 158-168 .

Palavras-Chave #carbene complexes #group 6 metals #azolinylidene complexes #transmetallation #METAL #TUNGSTEN #BOND
Tipo

article