Deprotonation and anionic rearrangements of organometallic compounds. 5. Kinetic vs. thermodynamic deprotonation in reactions of cyclopentadienylrhenium acyl and alkyl complexes with strong bases

In this paper, reactions of cyclopentadienylrhenium acyl complexes (eta/sup 5/-C/sub 5/H/sub 5/)Re(NO)(PPh/sub 3/)(COR) with strong bases are described. Depending upon the substrate and conditions, either enolate formation or rearrangement chemistry can occur. Related chemistry of alkyl complexes (e...

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Veröffentlicht in:	J. Am. Chem. Soc.; (United States) 1986-03, Vol.108 (6), p.1185-1195
Hauptverfasser:	Heah, Poh Choo, Patton, Alan T, Gladysz, J. A
Format:	Artikel
Sprache:	eng
Schlagworte:	400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987) ACYL RADICALS ALKENES ANIONS BASES CHARGED PARTICLES CHEMICAL REACTION KINETICS CHEMICAL REACTIONS COMPLEXES CYCLOALKENES CYCLOPENTADIENE DATA DIENES EXPERIMENTAL DATA HYDROCARBONS INFORMATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IONS KINETICS NUMERICAL DATA ORGANIC COMPOUNDS ORGANOMETALLIC COMPOUNDS PH VALUE POLYENES RADICALS REACTION KINETICS RHENIUM COMPLEXES THERMODYNAMICS TRANSITION ELEMENT COMPLEXES
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Zusammenfassung:	In this paper, reactions of cyclopentadienylrhenium acyl complexes (eta/sup 5/-C/sub 5/H/sub 5/)Re(NO)(PPh/sub 3/)(COR) with strong bases are described. Depending upon the substrate and conditions, either enolate formation or rearrangement chemistry can occur. Related chemistry of alkyl complexes (eta/sup 5/-C/sub 5/H/sub 5/)Re(NO)(PPh/sub 3/)(R) and pentamethylcyclopentadienyl acyl complexes (eta/sup 5/-C/sub 5/Me/sub 5/)Re(NO)(PPh/sub 3/)(COR) is also reported. From this study, a detailed picture of the acid/base properties of these molecules emerges. 51 references, 1 table.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja00266a012