2,3-Butanediol → 2,3-Butanediol

HRID 1938788Notes

Reaction equation

HRID 1938788 reaction equation
C(O)C(O)C.[CH3:6][CH:7]([OH:11])[CH:8]([OH:10])[CH3:9].[CH2:12]([NH2:15])[CH2:13][NH2:14]>O>[CH3:6][CH:7]([OH:11])[CH:8]([OH:10])[CH3:9].[CH3:6][C:7]1[C:8]([CH3:9])=[N:15][CH:12]=[CH:13][N:14]=1

Participants

6

Reactant 3

HCID 2622,3-ButanediolHCID 1030Propylene GlycolHCID 3301Ethylenediamine

Product 2

HCID 2622,3-ButanediolHCID 222012,3-Dimethylpyrazine

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The procedure in Example 2 was repeated except that propylene glycol was replaced by 2,3-butanediol, water was not used and the mixing (molar) ratio of the mixed gas was changed to ethylene diamine: 2,3-butanediol:nitrogen=1:1.2:0.7 to produce 2,3-dimethylpyrazine. The rate of conversion was 100% and the yield of 2,3-dimethylpyrazine was 72%.

Sources & evidence

ORD record
ord-25ee039d409c42fbb0581d16a23a2969
Source dataset
uspto-grants-1997_12
Patent number
US05693806

Reaction notes

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