Hydrochloric Acid → HCID 21698798, compound

Participants

Reaction Conditions

Reaction Steps

To a three liter flask was charged 200 grams of ice and 1.25 moles of hydrochloric acid. 63.6 grams of o-anisidine was added. At a temperature of 0°-3° C. was added 35 gm of sodium nitrite as a 40% solution. Once the o-anisidine was fully diazotized, 100 gm. of methoxypropyl alpha naphthylamine and 100 gm of xylene were added. The pH was then raised to between 3.5 and 4.0 with a mineral alkaline buffering agent. The coupling temperature was maintained at between 8°-12° C. while the mixture was stirred for 4 hours until a negative coupling test was achieved. The reaction was heated to 70°C. An organic layer was separated from an aqueous phase. Xylene was stripped under vacuum. The non-volatile tarry substance was dissolved in an aromatic high flash solvent which is 50% product/50% viscosity depressant, which solution is stable at -20° C. indefinitely.

Provenance & Evidence