Group 15 iron carbonyl complexes

Catenated Organic Compounds of the Group IV Elements, 4,1 Conjugate Addition of Grignard Reagents to Aromatic Systems, 1, 221 Cyclobutadiene Metal Complexes, 4, 95 Cyclopentadienyl Metal Compounds, 2, 365 Diene-Iron Carbonyl Complexes, 1, 1... 

Table 7.12 Calculated BDEs De (Do) (kcal/mol) of iron carbonyl complexes with group-13 diyl ligands ER (E = B - Tl).a...

The synthesis of (+)-pisiferic acid (1) presents many important aspects (i) functionalization of the angular methyl group to lactone, (ii) cleavage of lactone ring to carboxylic acid, and (iii) conversion of (78) to allylic alcohol (81) via iron carbonyl complex... 

The knowledge of the principal components of the chemical shift tensor and of the csa has been exploited to quantify the degree of asymmetry of bonding for semi-bridging CO groups in iron carbonyl complexes. In fact very good... 

Tricarbonyliron complexes of conjugated trienes react with diazoalkanes at the free (uncom-plexed) double bond. In the synthesis of dimethyl 2-formylcyclopropane-l, 1-dicarboxylate (48), the ceric ion served the double function of catalyzing the deazetization and removing the tricarbonyl iron protecting group. When the optically active iron carbonyl complex was used, the addition of diazomethane gave selectively one diastereomer and this was used to make optically active dimethyl 2-formylcyclopropane-l,1-dicarboxylate (>90% ee). A similar route was employed to make the optically active formyl cyclopropanes 49, precursors to optically active cis- and tran.v-chrysanthemic acids. 

Group VIII Iron, Ruthenium, and Osmium 6.1 Iron Carbonyl Complexes.- Stepwise degradation of S(NSiMe2)2 occurs on reaction with Fe (CO) 2 giving [Fe2(CO)g(Me SiNS)]... 

As shown in eq. (15.27), vinylketene reacts with isonitrile to afford the iron-carbonyl complex of vinylketeimine. If the reaction is stopped at the initial stage (3—3.5 h), the intermediate product in which one carbonyl group is replaced with isonitrile forms with the same amount of the final product. The intermediate is rearranged to a keteimine via an iron carbene complex as shown in eq. (15.27) [80]. 

The iron carbonyl complexes are most easily obtained via reaction of a suitable salt of [Fe(CO)4] and an appropriate dihalo-group 13 element complex X2ER, but reaction of a neutral iron carbonyl compound with (RE) may also be used. The syntheses of the known Fe(CO)4 compounds arc presented in Equations (11)-(14). The R group attached to E can also be a donor ligand such as tris(pyrazolyl)borate (Equation (14)). ... 

Substituted iron carbonyl complexes ineluding Fe(C0)3 As(C6H40Me-/>)3)2 and Fe(C0)4 As(C6H40Me-/>)3) were examined by electrospray mass spectrometry (ESMS). Whereas the related compound Fe(CO>3(AsPh3)2 did not give an ESMS spectrum, the methoxy-substituted compounds did. This was attributed to the presence of protonatable methoxy groups. Both the monosubstituted and disubstituted compounds were observed in a crude... 

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