Reactive iron carbonyl species generated in situ using the Fe(CO) 5/t-BuOK/CH 3COOH/CH 2Cl 2 reagent system reacts with alkynes to give the corresponding α,β-unsaturated carboxylic acids after CuCl 2·2H 2O oxidation with some regio and stereoselectivity.
Bibliographical noteFunding Information:
We thank the CSIR (New Delhi) for research fellowship to MB. DST support through a J. C. Bose National Fellowship grant to MP is gratefully acknowledged. We also thank the DST for the 400 MHz NMR facility under FIST program. This research work is also supported by the UGC under the “University of Potential for Excellence”, the Center for Advanced Study (CAS) and the UGC-MHRD Chemistry Networking Resource Center programs.
- Iron carbonyls
- α,β-Unsaturated carboxylic acids