Caprolactam → HCID 20196942, compound

HRID 867520Notes

Reaction equation

HRID 867520 reaction equation
[CH2:1]([N:10]=C=O)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]=[C:8]=[O:9].C1(=[O:20])NCCCCC1>C([O-])(=O)CCCCCCCCCCC.C([O-])(=O)CCCCCCCCCCC.C([Sn+2]CCCC)CCC>[C:1]([CH:2]1[CH2:3][CH2:4][CH2:5][CH2:6][NH:7][C:8]1=[O:9])(=[O:20])[NH2:10]

Participants

4

Reactant 2

HCID 7768CaprolactamHCID 13192Hexamethylene diisocyanate

Product 1

HCID 20196942HCID 20196942, compoundYield 817.2%

Reagents, catalysts & solvents 1

HCID 9809426Di-n-butyldilauryltinCatalyst

Conditions

Temperature
80 °C

Procedure

To the flask were added 0.01 g of dibutyltin dilaurate and then 17.0 g of hexamethylene diisocyanate to effect reaction with the polyoxytetramethylene di-ol. After stirring for 2 hours, 12.0 g of dry ε-caprolactam was added to the reaction mixture, and the inner temperature was raised up to 80° C., at which the reaction was continued for an additional 2 hours. There was obtained 129 g of carbamoyl caprolactam-terminated polyoxytetramethylene.

Workup

  1. customreaction with the polyoxytetramethylene di-ol
  2. waitwas continued for an additional 2 hours

Sources & evidence

ORD record
ord-b114d4db8ef4436c9e9736c290788277
Source dataset
uspto-grants-1988_10
Patent number
US04775721

Reaction notes

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