A. I. Nekhaev

Thermal decomposition of 1-trimethylsilyl-μ3-S,S'-ethylenedithiolatohexacarbonyldiiron

Conclusions1.The thermal decomposition of 1-trimethylsilyl-μ3-S,S-ethylenedithiolatohexacarbonyldiiron leading to the formation of trimethylvinylsilane, CO and FeS is accompanied by partial desilylation with the formation of ethylene and propylene.2.The pyrolysis of the dithiolane diiron hexacarbonyl complex of trimethylvinylsilane in the presence of HCl proceeds with significant desilylation of the starting complex and formation of 1,1-dichloroethane, 1,1-dichloropropane, butanedithiol, and hexanedithiol.

Induction and resonance constants of butadienyliron tricarbonyl substituents

In dieneiron tricarbonyls the π-electron density in the 1 position of the coordinated butadiene system is higher than in the 2 position, while the σ-electron density is distributed uniformly.

Unexpected isomerization in the presence of iron carbonyl

Iron carbonyls i s o m e r i z e unconjugated dienes to conjugated dienes [1]. As a ru le , conjugated dienes f o r m complexes with i ron ca rbonyls . A shift of the conjugated double bonds is obse rved in those cases where all of the hydrogen a toms in the 1 and (or) 4 posi t ions of the butadtene s y s t e m a re rep laced by alkyl r ad ica l s , which prevents the fo rmat ion of complexes [2].

Cleavage of hydride ion from dieneiron tricarbonyls under friedel-crafts acylation conditions

1. Cyclohexadieneiron tricarbonyl is acylated under more drastic conditions than the complexes of acyclic dienes; the main product contains the acetyl group in the 5 position. 2. For complexes, whose structure does not prevent the formation of stable dienyl cations, one of the principal directions of the reaction under Friedel-Crafts acylation conditions is the cleavage of hydridion.

Acylation of dieneiron tricarbonyl complexes

1. A study was made of the Friedel-Crafts acylation of some iron tricarbonyl complexes with cyclic and acyclic dienes. 2. Transfer of the reaction center is observed in the acylation of cyclohexadieneiron tricarbonyl. 3. For complexes, whose structure does not prevent the formation of dienyl cations, one of the main directions of the reaction under Friedel-Crafts acylation conditions is the cleavage of hydride hydrogen. 4. The complex ketones were reduced by the LiAlH4-AlCl3 system.

1-and 2-substituted 1,3-butadieneiron tricarbonyls

1. A one-step method was proposed for the synthesis of the dienicπ-complexes of iron tricarbonyl, starting withα, β-unsaturated alcohols. 2. 1-Ferrocenyl-1-buten-3-ol when reacted with Fe2(CO)9 in the presence of CuSO4· 5H2O is isomerized to 1-ferrocenyl-3-butanone. 3. The 1-and 2-substituted 1,3-butadieneirontricarbonyls, containing ferrocenyl and m,p-fluorophenyl substituents, were synthesized.