Trimethyl borate → Boric Acid

HRID 1452443Notes

Reaction equation

HRID 1452443 reaction equation
[B:1]([O:6][CH3:7])([O:4][CH3:5])[O:2][CH3:3].C(O)(=O)C(C)=C.CC(O)COC(CO)C.COC(COC(COC(CO)C)C)C>>[B:1]([OH:6])([OH:4])[OH:2].[B:1]([O:6][CH3:7])([O:4][CH3:5])[O:2][CH3:3]

Participants

5

Reactant 3

HCID 8470Trimethyl borateHCID 250541-Propanol, 2-(2-(2-methoxypropoxy)propoxy)-HCID 86592450HCID 86592450, compound

Product 2

HCID 7628Boric AcidHCID 8470Trimethyl borate

Conditions

Temperature
75 °C

Procedure

207.6 Grams (2.0 mols) of trimethyl borate was added to 202 g (1.0 mol) of dipropylene glycol monomethacrylate and 412 g (2.0 mols) of tripropylene glycol monomethyl ether, followed by keeping them at 60° C. for 1 hour with stirring in a dry air atmosphere and then heating to 75° C. After the temperature reached 75° C., the pressure in the system was gradually reduced. The system was kept at a pressure of 2.67 kPa (20 mmHg) or lower for 6 hours to remove volatile matters produced with progress of ester interchange reaction of boric acid and excess trimethyl borate, followed by filtration to obtain 610 g of the polymerizable boron-containing compound B represented by the formula (1). An infrared absorption spectrum of the resulting polymerizable boron-containing compound B was measured to confirm that the absorption band originating from hydroxyl group at 3300 cm−1 disappeared.

Workup

  1. customat 60° C.
  2. customfor 1 hour
  3. customreached 75° C.
  4. customto remove volatile matters

Sources & evidence

ORD record
ord-45a32ace41d843a389edef54d2ec11c9
Source dataset
uspto-grants-2009_01
Patent number
US07473492B2

Reaction notes

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