Guanidine Hydrochloride → 10065-79-9

HRID 1876752Notes

Reaction equation

HRID 1876752 reaction equation
[CH2:1]1[CH2:5][O:4][CH2:3][CH2:2]1.Cl.[NH2:7][C:8]([NH2:10])=[NH:9].[OH-:11].[Na+].Cl[C:14]([O:16][CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)=[O:15]>O>[CH2:17]([O:16][C:14]([NH:9][C:8]([NH:10][C:3]([O:4][CH2:5][C:1]1[CH:2]=[CH:3][CH:2]=[CH:1][CH:5]=1)=[O:11])=[NH:7])=[O:15])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

6

Reactant 4

HCID 5742Guanidine HydrochlorideHCID 8028TetrahydrofuranHCID 10387Benzyl chloroformateHCID 14798Sodium Hydroxide

Product 1

HCID 13783255110065-79-9

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
5 °C

Procedure

A 100 L glass lined reactor equipped with a mechanical agitator, cooling jacket, condenser, and addition lines was charged with THF (15.53 kg) and guanidine HCl (3.10 kg, 32.02 mol). To the resultant slurry was added purified water (5.00 kg) and 50% sodium hydroxide solution (8.61 kg, 100.75 mol). The resultant slurry was cooled to 4-6° C. and benzyl chloroformate (13.02 kg, 72.51 mol) was slowly added over a 3.5-hour period, while keeping the temperature below 10° C. The resultant slurry was stirred for 2 hours at a temperature between 5-10° C. The slurry was then filtered and the solids washed with THF (5.58 kg).

Workup

  1. customequipped with a mechanical agitator
  2. temperaturecooling
  3. additionjacket, condenser, and addition lines
  4. additionTo the resultant slurry was added
  5. customthe temperature below 10° C
  6. filtrationThe slurry was then filtered
  7. washthe solids washed with THF (5.58 kg)

Sources & evidence

ORD record
ord-7276777d1abc43a3a4589e09973760c1
Source dataset
uspto-grants-2012_11
Patent number
US08309720B2

Reaction notes

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