Reaction #2383765

ord-54351648d1a842bba6dbadc6983a50e8

Reaction equation

Cc1c[nH]nc1C
3,4-dimethylpyrazole
O=P(O)(O)O
phosphoric acid
O=P(O)(O)O
phosphoric acid
→
Cc1c[nH+][nH]c1C.O=P([O-])(O)O
3,4-dimethylpyrazolium dihydrogen phosphate
Yield 98.0%

Reactants

Cc1c[nH]nc1C
3,4-dimethylpyrazole
O=P(O)(O)O
phosphoric acid
O=P(O)(O)O
phosphoric acid

Reagents

None

Solvents

O
water

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    Otherwas evaporated
  2. 2
    workup.WAITAfter a few hours
  3. 3
    Otherthe title compound crystallized out from the oil initially present (yield 98%)

Procedure

96 g (1.0 mol) of 3,4-dimethylpyrazole were dissolved in 115 g (1.0 mol) of phosphoric acid (85%) at room temperature. The water contained in the phosphoric acid was evaporated. After a few hours, the title compound crystallized out from the oil initially present (yield 98%).

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06488734B1uspto-grants-2002_12