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Novel Synthesis of Acyloxyferrole Complexes from Alkynes and Their Conversion to Cyclobutenediones

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journal contribution
posted on 02.02.2004, 00:00 by Mariappan Periasamy, Amere Mukkanti, D. Shyam Raj
Acyloxyferrole complexes are easily prepared by the reaction of alkynes and Fe3(CO)12/Et3N in THF, which upon reaction with Br2 in dichloromethane at −78 °C give the corresponding cyclobutenediones in 60−90% yields. The acyloxyferrole complex prepared using diphenylacetylene and acetyl chloride was characterized by single-crystal X-ray analysis.