2,6-Diisopropylaniline

2,6-Diisopropylaniline carries an isopropyl group on each position beside the amino group — bulkier than the ethyl pattern of its sibling in this family, and bulky enough that the compound's real commercial value lies less in conventional herbicide synthesis and more in coordination chemistry, where that steric shield is exactly what certain ligand designs call for.

It is a liquid at ambient temperature across any normal handling range, freezing only at −45 °C, so it carries none of the cold-weather handling concerns its 2,6-diethyl sibling brings. Fresh material is colourless to pale yellow, and some lots discolour toward brown on standing. It is poorly soluble in water, consistent with the extra steric bulk and higher log P of 3.18, and dissolves readily in common organic solvents.

Where it fits in the synthesis chain

We want to be precise about this compound's real uses rather than repeat a common mix-up: 2,6-diisopropylaniline is sometimes assumed to be the amine precursor for the herbicide dimethenamid, but dimethenamid is in fact built from a substituted thiophene amine, a structurally unrelated starting material. What is well documented is this compound's role as a sterically demanding amine building block in organometallic and catalysis chemistry — it is a standard precursor for N-heterocyclic carbene (NHC) ligands, β-diketiminate ("NacNac") ligands and 2,6-pyridinediimine ligands used in olefin-polymerisation and other catalyst systems — alongside general use as a dye-industry and agrochemical-synthesis intermediate.

Grades we supply

Chelora Chemicals offers 2,6-Diisopropylaniline in technical grade (98%) and high-purity grade (99%+), both with a batch-wise certificate of analysis. Because ligand synthesis chemistry is typically run at smaller scale and with tighter purity requirements than bulk herbicide manufacture, tell our desk your intended use at enquiry and we will quote the grade and documentation that suits it.

2,6-Diisopropylaniline is made by the same family of industrial process as 2,6-diethylaniline: catalytic ortho-dialkylation of aniline, here with propylene rather than ethylene, run under pressure over a solid acid catalyst such as alumina or silica-alumina. The amino group directs both isopropyl substituents cleanly to the two ortho positions.

Building the molecule this way, from aniline outward, avoids the isomer-separation difficulty that a nitration-based route to the equivalent diisopropylbenzene would create. It is the dominant and most economical commercial process for this compound.

After alkylation the crude amine is washed and distilled to remove unreacted aniline, mono-alkylated by-product and catalyst residues, with the distillation cut setting the divide between technical and high-purity grade.

A bulkier shield than its diethyl sibling

The isopropyl group is a meaningfully larger substituent than ethyl, and that extra bulk is the entire point of this compound commercially. It is why ligand chemists reach for this aniline rather than the diethyl version when a reaction centre needs more complete steric protection — and it is also why, unlike 2,6-diethylaniline, this grade has not found a comparable role as a direct herbicide-amine precursor; the bulk that makes it valuable in catalysis does not map onto an established chloroacetanilide route.