Carbon Dioxide → Potassium diphenylmethane

HRID 31360

Reaction equation

HRID 31360 reaction equation
C(C1C=CC=CN=1)=C.C(=O)=O.[K:12].C1C2C(=CC=CC=2)C=CC=1.[C:23]1([CH2:29][C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1>CC(C)=O.C1COCC1>[C:23]1([CH2:29][C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.[K:12]

Participants

7

Reactant 4

HCID 280Carbon DioxideHCID 75212-VinylpyridineHCID 7580DiphenylmethaneHCID 66602812Naphthalene potassium

Product 1

HCID 66720999Potassium diphenylmethane

Reagents, catalysts & solvents 2

HCID 180AcetoneSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-78 °C

Procedure

First, poly(2-vinylpyridine) homopolymer was prepared by using 2-vinylpyridine (2VP) monomer at −78° C. and under high vacuum (10−6 torr) in the solvent of THF for 30 min. The temperature of −78° C. is maintained by adding dry ice in a constant-temperature bath with acetone, and measured with a thermometer for low temperature. The initiator of potassium diphenylmethane (DPM-K) was prepared by reacting potassium-naphthalene (K-NaPh) ion solution with diphenylmethane, and diluted to appropriate concentration using a distribution device connected to vacuum line. The initiator was divided into glass ampoules and stored in a low temperature refrigerator.

Workup

  1. customat −78° C.
  2. additiondiluted
  3. concentrationconcentration

Sources & evidence

ORD record
ord-d0efe49e78ac475b9514f01985d6775d
Source dataset
uspto-grants-2008_09
Patent number
US07425593B2

Linked notes

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