Maleic Anhydride → HCID 12239094, compound

HRID 1080928Notes

Reaction equation

HRID 1080928 reaction equation
[C:1]1(=[O:7])[O:6][C:4](=[O:5])[CH:3]=[CH:2]1.[CH3:8][C:9]([C:11]([CH3:13])=[CH2:12])=[CH2:10]>C1(C)C=CC=CC=1>[CH3:8][C:9]1[CH2:10][C@H:2]2[C:1]([O:6][C:4](=[O:5])[C@H:3]2[CH2:12][C:11]=1[CH3:13])=[O:7]

Participants

4

Reactant 2

HCID 7923Maleic AnhydrideHCID 105662,3-Dimethyl-1,3-butadiene

Product 1

HCID 12239094HCID 12239094, compoundYield 92%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

Maleic anhydride (9.8 g, 0.10 mol) and 2,3-dimethylbutadiene (9.84 g, 0.12 mol) were mixed in toluene (50 ml) for 24 h at 50° C. The solution was allowed to cool, the solvent removed in vacuo and the residue recrystallised from petroleum ether (40° C.-60° C.) to yield the title compound in 92% yield. N.m.r: δH (90 MHz, CDCl3) 2.60 (m,2H), 2.14 (m,4H), 1.74 (s,6H).

Workup

  1. temperatureto cool
  2. customthe solvent removed in vacuo
  3. customthe residue recrystallised from petroleum ether (40° C.-60° C.)

Sources & evidence

ORD record
ord-56ae8ac9ea43469e99fad8010bde28e9
Source dataset
uspto-grants-1996_12
Patent number
US05583261

Reaction notes

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