56640-70-1

Basic information

• Product Name: 2-methylprop-1-en-1-ol
• Synonyms: 1-Hydroxy-2-methylpropene; 1-Propen-1-ol, 2-methyl-; 2-Methyl-1-propenol; Prop-1-en-1-ol, 2-methyl-
• CAS NO: 56640-70-1
• Molecular Formula: C₄H₈O
• Molecular Weight: 72.1057
• Mol File: 56640-70-1.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 87.3°C at 760 mmHg
• Flash Point: 15.4°C
• Density: 0.843g/cm³
• Vapor Pressure: 40.2mmHg at 25°C
• Refractive Index: 1.428
• PKA: 11.86±0.50(Predicted)
• CAS DataBase Reference: 2-methylprop-1-en-1-ol(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methylprop-1-en-1-ol(56640-70-1)
• EPA Substance Registry System: 2-methylprop-1-en-1-ol(56640-70-1)

Safety Data

• Hazardous Substances Data: 56640-70-1(Hazardous Substances Data)

Upstream product

• 513-42-8 3-hydroxy-2-methyl-1-propene 
• 78-85-3 2-methylpropenal 

Downstream Products

• 6651-34-9 2-methyl-1-(trimethylsilyloxy)-1-propene 
• 66178-22-1 (Z)-Prop-1-en-1-yl orthoacetate 
• 66178-21-0 (E)-Prop-1-en-1-yl orthoacetate 
• 78-84-2 isobutyraldehyde 
• 54889-46-2 2-methylallyl cinnamate 

Relevant articles and documents

A Stable, Simple Enol: Ketonization of 2-Methylprop-1-en-1-ol in Nonaqueous Solvents

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METHOD FOR PREPARING ISOBUTENOL

The present invention provides a method for preparing isobutanol, which comprises a step of selectively hydrogenating methacrolein in the presence of a catalyst and additives. The preparation method according to the present invention can increase the selectivity of the isobutanol.

Generation of Simple Enols in Non-aqueous Solution by Fast Double-bond Migration of Allylic Alcohols with Rhodium(I) and Iridium(I) Complexes

The complexes ClO4 1 and ClO4 2 (cod = cycloocta-1,5-diene), rapidly catalyse the double-bond migration of 2-ethylprop-2-en-1-ol 3 and prop-2-en-1-ol 4, respectively to generate a significant amount of the enols 2-methylbut-1-en-1-ol 5 and prop-1-en-1-ol 6 in the absence of a solvent and in CD3COCD3.Both enols 5 and 6 are quite stable and slowly undergo ketonization to the corresponding carbonyl compounds at room temperature in the absence of a solvent and in aprotic solvents.Detailed 1H NMR spectral data at 300 MHz suggest that two isomers (Z and E) of the compound 5 are simultaneously produced in the reaction of 3 and 1, the ratio of the isomers (major : minor) being ca. 6-9:1.Reaction of compound 4 with 2 also generates the Z (major) and E isomers (minor) of 6.The Z isomer initially generated rapidly undergoes isomerization to give the E isomer in the presence of 2, while both the Z and E isomers relatively slowly undergo ketonization.Additional 1H and 13C NMR and infrared spectral data for Me2C=CHOD and Me2CDCHO are reported with some experimental details.