منابع مشابه
Photochemical Generation of Tribromostannate(II) by Redox and Substitution Reactions
Photocatalysis by m etal complexes is a rapidly expanding branch of catalysis and photochem istry [1], For special applications the light-induced for m ation of catalysts offers distinct advantages or is even required. As an exam ple the base-catalyzed cross-linking of polymers for lithographic image form ation may be m entioned [2], Accordingly, it is of general importance to search for photo...
متن کاملThe Kinetics and Mechanisms of Substitution Reactions of Trans-[Co(en)2CNCl]+ in Binary Mixed Solvent
The kinetics and mechanisms of the substitution reactions of trans-[Co(en)2CNCl]+ with unidentate anions, , CN¯, I¯, , Br¯ and SCN¯ in 60% v/v DMF-H2O binary solvent at 40.0±0.2 °C were studied spectrophotometrically. An Id mechanism was assigned for the replacement of chlorine by , CN¯ and I¯, an Ia one for...
متن کاملSolvent-free Substitution Reactions of Solid Phosphines
Reactions of (η-RC5H4)Fe(CO)2I (R = H, Me) complexes with phosphine ligands PR′3 (R′ = Ph, m-Tol, p-C6H4OMe, p-C6H4Cl, p-C6H4F) have been performed under solvent-free conditions in the melt phase and generally yielded the ionic products [(η5-RC5H4)Fe(CO)2PR′3]I rather than the CO substituted products (η5-RC5H4)Fe(CO)(PR′3)I. The complexes have been characterised by IR, NMR and MS techniques. By...
متن کاملQuantum Chemical Studies of Aromatic Substitution Reactions
In this thesis, density functional theory (DFT) is used to investigate the mechanisms and reactivities of electrophilic and nucleophilic aromatic substitution reactions (SEAr and SNAr respectively). For SEAr, the σ-complex intermediate is preceded by one (halogenation) or two (nitration) π-complex intermediates. Whereas the rate-determining transition state (TS) for nitration resembles the seco...
متن کاملNucleophilic substitution reactions of pyranose polytosylates.
The 2,3,4-tri-toluenesulfonate ester derivatives of the methyl pyranosides of l-arabinose, d-ribose, d-lyxose, and d-xylose have been prepared, and their substitution reactions with various nucleophiles have been examined. For arabinose, xylose, and ribose, highly regioselective monosubstitutions were observed with benzoate, nitrite, and azide anions. These reactions have led to short and simpl...
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ژورنال
عنوان ژورنال: Journal of Synthetic Organic Chemistry, Japan
سال: 1967
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.25.903