Phosphoric Acid → Phosphoric acid--piperazine (1/1)

HRID 745648Notes

Reaction equation

HRID 745648 reaction equation
[OH:1][P:2]([OH:5])([OH:4])=[O:3].[NH:6]1[CH2:11][CH2:10][NH:9][CH2:8][CH2:7]1.P([O-])([O-])([O-])=O>O>[P:2]([OH:5])([OH:4])([OH:3])=[O:1].[NH:6]1[CH2:11][CH2:10][NH:9][CH2:8][CH2:7]1

Participants

5

Reactant 3

HCID 1004Phosphoric AcidHCID 1061PhosphateHCID 4837Piperazine2×

Product 1

HCID 64733Phosphoric acid--piperazine (1/1)

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

200 g of H3PO4 (85%) in 200 cc of H2O were reacted with 77 g of piperazine (97%) in 300 cc of H2O at a maximum temperature of 65° C. and at a pH of about 5. The precipitate, consisting of the acid orthophosphate of piperazine, was maintained at a temperature from 0° to 5° C. for about 20 hours, then it was filtered and dried.

Workup

  1. temperaturewas maintained at a temperature from 0° to 5° C. for about 20 hours
  2. filtrationit was filtered
  3. customdried

Sources & evidence

ORD record
ord-0288dabf1c3f4df4aaad1ec45fe4a8c0
Source dataset
uspto-grants-1986_07
Patent number
US04599375

Reaction notes

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