Lu, Sheng-Mei et al. published their research in ACS Catalysis in 2022 | CAS: 659-70-1

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Product Details of 659-70-1

Hydrogenation of Alkyl Carboxylic Acids with Tetrahydropyrimidine-Derived Iridium Complexes under Mild Conditions was written by Lu, Sheng-Mei;Wang, Meng-Meng;Lin, Xiangfeng;Li, Can. And the article was included in ACS Catalysis in 2022.Product Details of 659-70-1 This article mentions the following:

Reported herein are competent iridium catalysts [Cp*Ir(N,N’)(H2O)][OTf]2 (N,N’ = three different 2,2′-bi-1,4,5,6-tetrahydropyrimidines) for application in the catalytic hydrogenation of a series of alkyl carboxylic acids under mild conditions (25-100°C) without any additives. Among these structurally diverse catalysts evaluated for reactivity, the complex bearing an electron-deficient ligand (N,N’ = 2,2′-bi-5,5′-hydroxyl-1,4,5,6-tetrahydropyrimidine) was the most robust, which can hydrogenate acetic acid smoothly at 25°C to give the alc. and ester products with a TON of 1106. Detailed mechanistic studies suggest that the generation of an [Ir-H] intermediate was involved in the rate-limiting step. With this catalyst system, a broad range of alkyl carboxylic acids were hydrogenated with moderate to high TONs. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Product Details of 659-70-1).

Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Product Details of 659-70-1

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics