Methacrylic Acid → Tetrahydropyranyl methacrylate

HRID 459064Notes

Reaction equation

HRID 459064 reaction equation
[C:1]([OH:6])(=[O:5])[C:2]([CH3:4])=[CH2:3].[O:7]1[CH2:12][CH2:11][CH2:10][CH:9]=[CH:8]1>CS(O)(=O)=O>[C:1]([O:6][CH:8]1[CH2:9][CH2:10][CH2:11][CH2:12][O:7]1)(=[O:5])[C:2]([CH3:4])=[CH2:3]

Participants

4

Reactant 2

HCID 4093Methacrylic AcidHCID 80803,4-dihydro-2H-pyran

Product 1

HCID 11041138Tetrahydropyranyl methacrylateYield 72%

Reagents, catalysts & solvents 1

HCID 6395Methanesulfonic AcidCatalyst

Procedure

2-Tetrahydropyranyl methacrylate (THPMA) was prepared in an analogous manner to the THF-ester above using 24.5 g (0.29 mol) of methacrylic acid, 25.6 g (0.305 mol) of 4,5-dihydropyran and 0.05 g of methanesulfonic acid to yield 35.5 g (72%) of the desired product after distillation at reduced pressure.

Sources & evidence

ORD record
ord-647d4434fdfb44f895c457f7902971f7
Source dataset
uspto-grants-2007_03
Patent number
US07193023B2

Reaction notes

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