Acetaldehyde → ST029253

HRID 2058812Notes

Reaction equation

HRID 2058812 reaction equation
[C:1]([C:5]1[CH:10]=[C:9]([CH3:11])[CH:8]=[C:7]([C:12]([CH3:15])([CH3:14])[CH3:13])[C:6]=1[OH:16])([CH3:4])(C)C.[CH:17](=[O:19])[CH3:18]>S(=O)(=O)(O)O>[CH3:11][C:9]1[CH:8]=[C:7]([C:12]([CH3:13])([CH3:14])[CH3:15])[C:6]([OH:16])=[C:5]([CH:1]([C:18]2[CH:1]=[C:5]([CH3:10])[CH:6]=[C:7]([C:12]([CH3:15])([CH3:14])[CH3:13])[C:17]=2[OH:19])[CH3:4])[CH:10]=1

Participants

4

Reactant 2

HCID 177AcetaldehydeHCID 314042,6-Di-tert-butyl-4-methylphenol

Product 1

HCID 3958994ST029253Yield 70.4%

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidCatalyst

Procedure

Into the reactor described in the foregoing Example 1 there are charged 220 g (1.0 g-mol) of 2,6-ditert.butyl-4-methylphenol, 2.2 g of sulfuric acid and 44 g (1 g-mol) of acetaldehyde are fed into the reactor for one hour at the temperature of 125° C. On completion of the reaction, the reaction mass is treated following the procedure described in the foregoing Example 1 to give 124.6 g of 1,1,-bis-(5-methyl-3-tert.butyl-2-hydroxyphenyl)ethane which constitutes 96.4% of theory, as calculated for the reacted 2,6-ditert.butyl-4-methylphenol (conversion of the latter is 73%).

Workup

  1. customOn completion of the reaction
  2. additionthe reaction mass is treated

Sources & evidence

ORD record
ord-b5e66e24bb3b462b8d4333f1b000d095
Source dataset
uspto-grants-1982_03
Patent number
US04319052

Reaction notes

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