Fuming sulfuric acid → HCID 53695178, compound

HRID 1413382Notes

Reaction equation

HRID 1413382 reaction equation
[CH3:1][C:2]1[CH:19]=[CH:18][CH:17]=[CH:16][C:3]=1[CH:4]=[C:5]1[CH:10]2[C:11]([CH3:13])([CH3:12])[C:7]([CH3:14])([CH2:8][CH2:9]2)[C:6]1=[O:15].[OH:20][S:21](O)(=[O:23])=[O:22].O=S(=O)=O>>[CH3:1][C:2]1[C:3]([CH:4]=[C:5]2[CH:10]3[C:11]([CH3:12])([CH3:13])[C:7]([CH3:14])([CH2:8][CH2:9]3)[C:6]2=[O:15])=[CH:16][C:17]([S:21]([OH:23])(=[O:22])=[O:20])=[CH:18][CH:19]=1

Participants

3

Reactant 2

HCID 24681Fuming sulfuric acidHCID 54065094HCID 54065094, compound

Product 1

HCID 53695178HCID 53695178, compound

Procedure

25.4 g of 3-o-methylbenzylidene camphor are dissolved with stirring in 84 ml of oleum containing 20% by weight SO3 with cooling so as to maintain the temperature below 25° C. Stirring of the resulting reaction mixture is continued for an additional 30 minutes at ambient temperature at which time it is poured into 200 ml of crushed ice. The precipitate which forms is filtered and crystallized in 100 ml of acetone to produce white crystals melting at 130° C. and corresponding to the dihydrate.

Workup

  1. temperaturewith cooling so as
  2. temperatureto maintain the temperature below 25° C
  3. filtrationThe precipitate which forms is filtered
  4. customcrystallized in 100 ml of acetone

Sources & evidence

ORD record
ord-90e14f97e3bf453da82c74a47a79a67c
Source dataset
uspto-grants-1981_02
Patent number
US04250108

Reaction notes

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