Transformation of dimethyl acetylenedicarboxylate to bis(methylcarboxylate)vinylidene at a diruthenium centre: unprecedented 1,2-migration of a CO2Megroup

Authors
King, PJ Knox, SAR Legge, MS Orpen, AG Wilkinson, JN Hill, EA
Citation
Pj. King et al., Transformation of dimethyl acetylenedicarboxylate to bis(methylcarboxylate)vinylidene at a diruthenium centre: unprecedented 1,2-migration of a CO2Megroup, J CHEM S DA, 10, 2000, pp. 1547-1548
Citations number
5
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
ISSN journal
03009246 → ACNP
Volume
10
Year of publication
2000
Pages
1547 - 1548
Database
ISI
SICI code
0300-9246(2000)10:<1547:TODATB>2.0.ZU;2-S
Abstract
Dimethyl acetylenedicarboxylate is shown to rearrange at a diruthenium cent re to give a mu-C=C(CO2Me)(2) vinylidene complex in high yield via a 1,2-CO 2Me shift within a diruthenacyclopentenone species, a transformation propos ed to occur via a zwitterionic mu-cyclopropenyl intermediate stabilised by the Cp* ligand.