Title of article :
Sterically demanding bi- and tridentate alkoxy-N-heterocyclic carbenes
Author/Authors :
Polly L. Arnold، نويسنده , , Marie-Claire Wilson، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
7
From page :
190
To page :
196
Abstract :
In contrast to the one-pot, two step syntheses we recently reported for a large number of substituted bidentate alkoxy–carbene ligands derived from epoxides, the reaction of imidazole with 2-adamantyl epoxide readily affords the bis(ethoxyadamantyl) substituted imidazolium salt [1-C{(NR)CHCH(NRH)}] (RH = CH2(2-adamantyl)OH), which has been isolated and structurally characterised as its iodide salt, [HC{(NRH)CH}2]I. Treatment with group 1 bases results in the loss of one ethoxy arm, to afford the structurally characterised monosubstituted alcohol imidazole, [HC{(NR)CHCHN}], or the lithium carbene complex [LiC{(NR)CHCHN}], a carbene complex containing a singly-N-functionalised alkoxy carbene. Alternatively, the monosubstituted alcohol imidazole may ben requaternised at the nitrogen atom with iso-propyl iodide to form [HC{(NRH)CHCH(NPri)}]I, from which a more standard lithium alkoxycarbene complex [LiC{(NR)CHCHNPri}] may be generated.
Keywords :
Heterocyclic carbene lithium N-ligand alkoxide imidazolium imidazole
Journal title :
INORGANICA CHIMICA ACTA
Serial Year :
2007
Journal title :
INORGANICA CHIMICA ACTA
Record number :
1324348
Link To Document :
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