Hexamethylene diisocyanate → HCID 20488677, compound

HRID 1995437Notes

Reaction equation

HRID 1995437 reaction equation
[CH2:1]([N:10]=[C:11]=[O:12])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]=[C:8]=[O:9].[CH3:13][N:14]1[CH2:19][CH2:18][CH2:17][NH:16][CH2:15]1.[N-:20]=[C:21]=O>C(OCC)(=O)C>[CH2:1]([NH:10][C:11]([N:7]1[CH2:6][CH2:5][CH2:4][N:20]([CH3:21])[CH2:8]1)=[O:12])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][NH:7][C:8]([N:16]1[CH2:17][CH2:18][CH2:19][N:14]([CH3:13])[CH2:15]1)=[O:9]

Participants

5

Reactant 3

HCID 13192Hexamethylene diisocyanateHCID 105034IsocyanateHCID 5205481-Methylhexahydropyrimidine

Product 1

HCID 20488677HCID 20488677, compound

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

168 g of hexamethylenediisocyanate in 150 ml of ethyl acetate are slowly added to a mixture of 224 g of N-methylhexahydropyrimidine and 150 ml of ethyl acetate cooled to temperatures of from 15° to 20° C. Stirring is continued at room temperature after all the diisocyanate has been added until the isocyanate band in the IR spectrum has disappeared (after about 2 hours). The solvent is removed on a thin layer evaporator at 110° C. under a vacuum produced by a water jet pump. The viscous product preferentially consists of the following bis-hexahydropyrimidine derivative: ##STR18##

Workup

  1. temperaturecooled to temperatures of from 15° to 20° C
  2. customis continued at room temperature
  3. custom(after about 2 hours)
  4. customThe solvent is removed on a thin layer evaporator at 110° C. under a vacuum
  5. customproduced by a water jet pump

Sources & evidence

ORD record
ord-3c01103a895b463b9f8435b903c4df1e
Source dataset
uspto-grants-1983_09
Patent number
US04404379

Reaction notes

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