84518-71-8

Basic information

• Product Name: 4,4'-dimethyldicyclohexylamine
• CAS NO: 84518-71-8
• Molecular Weight: 209.375
• Mol File: 84518-71-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4,4'-dimethyldicyclohexylamine(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-dimethyldicyclohexylamine(84518-71-8)
• EPA Substance Registry System: 4,4'-dimethyldicyclohexylamine(84518-71-8)

Safety Data

• Hazardous Substances Data: 84518-71-8(Hazardous Substances Data)

Upstream product

• 589-91-3 p-methylcyclohexanol 
• 106-49-0 p-toluidine 
• 4994-13-2 4-methylcyclohexanone oxime 
• 7664-41-7 ammonia 
• 64-19-7 acetic acid 
• 99-99-0 1-methyl-4-nitrobenzene 
• 92377-01-0 1,2-bis(4-methylcyclohexylidene)hydrazine 
• 86467-47-2 4-methyl-cyclohexanone-hydrazone 

Relevant articles and documents

Enhanced Selectivity in the Hydrogenation of Anilines to Cyclo-aliphatic Primary Amines over Lithium-Modified Ru/CNT Catalysts

The hydrogenation of aromatic amines to the corresponding cycloaliphatic primary amines is an important industrial reaction. However, secondary amine formation and other side reactions are frequently observed, resulting in reduced selectivity. The side products are formed mostly on the support, yet support effects are little understood at present. This study describes the facile modification of Ru/CNT catalysts with LiOH, by this means significantly improving catalyst selectivity in toluidine hydrogenation without decreasing the activity of the catalysts. The effect is explained by LiOH diminishing acidic sites on the catalyst support and enhancing the adsorption of the aromatic ring on the metallic ruthenium nanoparticles. With the LiOH-modified Ru/CNT catalyst, other substrates, such as methylnitrobenzenes, are also converted efficiently. This study thus describes an improved catalyst for the preparation of cyclohexylamines and provides guidelines for future catalyst design.

Highly selective one-step hydrogenation of nitrobenzene to cyclohexylamine over the supported 10% Ni/carbon catalysts doped with 3‰ Rh

The carbon supported 10% Ni catalysts doped with 3‰ Rh have been prepared by an impregnation method. These catalysts have been used to catalyze the one-step hydrogenation of nitrobenzene to cyclohexylamine. The results show that the 3‰ Rh-10% Ni/CSC (biocarbon) catalyst exhibits an excellent performance to achieve 100 mol% conversion of nitrobenzene and 91.6% selectivity of cyclohexylamine under reaction conditions of 3.5 MPa and 140 °C. The recycling tests reveal recyclable stability of 3‰ Rh-10% Ni/CSC. This catalyst is active for the hydrogenation of a series of electron-deficient nitrobenzenes. Some factors such as the type of carriers, the content of Ni and Rh, the type of metals and additives play important roles in controlling the selective hydrogenation.