Dihydro-4-methyl-3-methylene-2(3H)-furanone → 4,5-Dimethyl-3-methylideneoxolan-2-one

Reaction equation

[CH2:1]=[C:2]1[CH:7]([CH3:8])[C:6](C)([CH3:9])[O:5][C:3]1=[O:4].C=C1C(C)COC1=O>>[CH2:1]=[C:2]1[CH:7]([CH3:8])[CH:6]([CH3:9])[O:5][C:3]1=[O:4]

Participants

Reactant 2

HCID 10844358Dihydro-4-methyl-3-methylene-2(3H)-furanone

HCID 13999518HCID 13999518, compound

Product 1

HCID 127891174,5-Dimethyl-3-methylideneoxolan-2-one

Procedure

α-methylene-β-methyl-γ,γ-dimethyl-γ-butyrolactone and, among them, once again, α-methylene-β-methyl-γ-butyrolactone (R1 =R2 =R3 =H, R4 =CH3, R5 =H or R1 =R2 =R3 =H and R4 =H and R5 =CH3).

Sources & evidence

ORD record: ord-f963eee4a36247c29fd3bfc6f5207c88
Source dataset: uspto-grants-1999_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05880235

Reaction notes

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