A new ferrocene-based bulky pyridine as an efficient reusable homogeneous catalyst

Abstract

An effective approach to reusing a homogeneous catalyst has been demonstrated. A ferrocene-based bulky pyridine has been synthesized and utilized as a homogeneous catalyst for the synthesis of benzoylfumarates as well as for acetylation. After the reaction, the catalyst was separated by simple precipitation and reused without appreciable loss of activity.

A Trigold(I) Ketenylidene Cation

“…We therefore examined a reaction chosen to give both gold− carbon bond cleavage and conversion of the ketenide to a readily identifiable product (Scheme 2b). The reaction of 1b in CD 2 Cl 2 solution with a mixture of thiophenol and sodium thiophenolate resulted in the clean formation of 3 equiv of (SIMes)AuSPh and 1 equiv of S-phenyl thioacetate, 45 as judged by 1 H NMR spectroscopy. The identity of the thioacetate ester was confirmed by GC−mass spectrometry.…”

Facile solvolysis of a surprisingly twisted tertiary amide

“…The crystal structures of other amides (5-7) 24,25 containing the same nitrogen substitution pattern as 1 show the same cis geometry as well as similar distortions of the amide, where the extent of distortion appears to be determined by the steric demands of the carbonyl substituent (Table 2). The amides containing ferrocenyl (5) and bicyclooctyl (1) groups are the most twisted of the series.…”

Poly(4-vinylpyridine-co-ethylvinylbenzene) as heterogeneous reusable catalyst for the synthesis of benzoyl fumarate

“…Application of reusable catalyst is important from the industrial as well as green chemistry point of view. We have recently reported a homogeneous reusable catalyst for the synthesis of benzoyl fumarates [15]. Subsequently, we made an improvement of the method by developing a nicotinic acid-based heterogeneous catalyst [16].…”