Formaldehyde → HCID 71775949, compound

HRID 1633194Notes

Reaction equation

HRID 1633194 reaction equation
[C:1]1([CH3:8])[C:2]([CH3:7])=[CH:3][CH:4]=[CH:5][CH:6]=1.C=O.[O-:11][S:12]([O-:14])=[O:13].[Na+].[Na+]>O>[C:1]1([S:12]([OH:14])(=[O:13])=[O:11])([CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]1[CH3:7]

Participants

5

Reactant 3

HCID 712Formaldehyde2×HCID 7237O-XyleneHCID 24437Sodium Sulfite

Product 1

HCID 71775949HCID 71775949, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

In a similar reactor as described in Example 47, there was charged 106 grams of xylene (1.0 mole). There was added with fast stirring, 150 grams of fuming H1SO4 (20% SO3) at 20°-40° C. over a period of two hours. Next, the reaction was heated at 90°-95° C. for 2.25 hours. It was then cooled to room temperature and 138.0 grams of water was added at 30°-40° C. Then to 200 grams of sulfonation product (0.508 mole) was added 20.5 grams of 37% formaldehyde (0.254 mole) and heated to reflux (110° C.) for eight hours. At the end of this period, all formaldehyde was reacted as determined via standard Na2SO3 titration procedure.

Workup

  1. customIn a similar reactor as described in Example 47, there
  2. additionThere was added
  3. temperatureNext, the reaction was heated at 90°-95° C. for 2.25 hours
  4. temperatureheated
  5. temperatureto reflux (110° C.) for eight hours

Sources & evidence

ORD record
ord-fef6a7def6cc4fb99f7d5f927b7bccd6
Source dataset
uspto-grants-1984_10
Patent number
US04479826

Reaction notes

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