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Synthesis And Characterization Of 1, 1'-Disubstituted Tertiary Ferrocenylamines

Posted on:2008-01-22Degree:MasterType:Thesis
Country:ChinaCandidate:R Q GaoFull Text:PDF
GTID:2121360245991223Subject:Organic Chemistry
Abstract/Summary:PDF Full Text Request
Condensation of diacylferrocenes(acyl=formyl, acetyl and benzoyl) and serissubstituted anilines (benzylamine) in mthanol or ether at room temperature cat-alyzed by titanic chloride resulted in 1,1-bisferrocenylaldimines [Fe{(η5-C5H4)C (H, CH3, C6H5)=NC6H4-R}2], [Fe{(η5-C5H4)C(H, CH3, C6H5)=NCH2C6H4-R}2], [Fe{(η5-C5H4)C(H, CH3)=NC*H(CH3)C6H4-R}2], R=4-MeO(a), 4-Me(b), H(c), 4-Cl(d), 3-Cl(e), H(R, f), H(S, g) in moderate yields. Reductions of these imin-es with sodium borohydride in methanol or lithium aluminum hydride in THF produced quantitative secondary ferrocenylamines [Fe{(η5-C5H4)CH(H, CH3, C6H5)NHC6H4-R}2], [Fe{(η5-C5H4)CH(H, CH3, C6H5)NHCH2C6H4-R}2], [Fe{(η5-C5H4)CH(H, CH3)NHC*H(CH3)C6H4-R}2], R=4-MeO(a), 4-Me(b), H(c), 4-Cl(d), 3-Cl (e),. H(R, f), H(S, g). Reductive methylations of secondary ferrocenylam-ines asmentined above with sodium cyanoborohydride gave out the correspondi-ng tertiary ferrocenylamines [Fe{(η5-C5H4)CH(H, CH3)N(CH3)C6H4-R}2], [Fe{(η5-C5H4)CH(H, CH3)N(CH3)CH2C6H4-R}2], [Fe{(η5-C5H4)CH(H, CH3)NCH3)C*H(CH3)C6H4-R}2], R=4-MeO(a), 4-Me(b), H(c), 4-Cl(d), 3-Cl(e), H(R, f), H(S, g). The structures of these tertiary ferrocenylamines were characterized by element-al analysis, IR and 1H NMR. In addition, the structures of one ferrocenylami-ne [Fe{(η5-C5H4)C(C6H5)=NCH2C6H4-OMe-4}2] and one tertiary ferrocenylamine[Fe{(η5-C5H4)CH2N(CH3)C6H4-OMe-4}2] were also confirmed with X-Ray singlecrystal diffraction.
Keywords/Search Tags:Ferrocene, Benzylamine, Anilines, Chirality, crystal, Mechanism
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