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Carbonyliron Complexes of Allenic Acids, Esters, Amides, and Imides

✍ Scribed by Latchezar S. Trifonov; Alexander S. Orahovats; Heinz Heimgartner

Publisher
John Wiley and Sons
Year
1990
Tongue
German
Weight
472 KB
Volume
73
Category
Article
ISSN
0018-019X

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✦ Synopsis

On irradiation in the presence of Fe(CO),, the allenic amides and imides showed a similar course of complexation to that of esters and lactones, respectively, e.g. the amides of type 10 led to diiron complexes of type 11 (Scheme 3 ) , whereas the imide 12 yielded a mixture of a dinuclear and two mononuclear complexes (13-15, Scheme 4 ) . The racemic ester 6 also gave mononuclear (7a, 7b, and 9) and dinuclear complexes (8a and 8b; Scheme 2). In case of the allenic acid 4, only complexation of type 5 was observed (Scheme 1). h v l F e Et2 0 ( C O I C , D @ ( L C H 3 COOH 2' F e l C O ~c o o H Ph 1 4 5 a , b ') *) Prepared via CH,N, methylation of the corresponding acid [S]. A similar mononiiclear complex has been assumed in the case of the 4,4-diphenyl-allenecarboxylate [2].

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