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Synlett 1993; 1993(12): 924-926
DOI: 10.1055/s-1993-22654
DOI: 10.1055/s-1993-22654
letter
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Transition Metal-Diene Complexes in Organic Synthesis, Part 18.1 Iron-Mediated [2+2+1] Cycloadditions of Diynes and Carbon Monoxide: Selective Demetalation Reactions
Further Information
Publication History
Publication Date:
19 March 2002 (online)
The iron-mediated [2+2+1] cycloaddition of the silylated terminal diynes 1 affords a broad range of tricarbonyliron-complexed carbo- and heterobicyclic cyclopentadienones 2. Demetalation of the iron complexes 2 can be controlled to afford either the free cyclopentadienones 5 or the isomerized and protodesilylated dienones 6.