Iodine → Isoprene

HRID 981404Notes

Reaction equation

[CH3:1][C:2](O)([CH3:6])[CH2:3][CH2:4][OH:5].P(=O)(O)(O)O.II>>[CH3:6][C:2](=[CH2:1])[CH2:3][CH2:4][OH:5].[CH2:4]=[CH:3][C:2](=[CH2:1])[CH3:6]

Participants

Reactant 3

HCID 807Iodine

HCID 1004Phosphoric Acid

HCID 247470Isopentyldiol

Product 2

HCID 6557Isoprene

HCID 129883-Methyl-3-buten-1-ol

Procedure

A process consisting of dehydration of 3-methyl-1,3-butanediol under heating in the presence of phosphoric acid or iodine gives 3-methyl-3-butene-1-ol with a yield of 35% and isoprene with a yield of 30-35% (Bulletin de la Societe Chimique de France 1964 pp800-804).

Sources & evidence

ORD record: ord-67256e3f957842d0b3359278fe4a1889
Source dataset: uspto-grants-1991_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04990697

Reaction notes

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