2513-25-9

Basic information

• Product Name: 2,2-Dimethyl-2H-1-benzopyran
• Synonyms: 2,2-Dimethyl-2H-1-benzopyran
• CAS NO: 2513-25-9
• Molecular Formula: C₁₁H₁₂O
• Molecular Weight: 160.2124
• Mol File: 2513-25-9.mol
• Article Data: 5

Chemical Properties

• Melting Point: 78-90 °C
• Boiling Point: 246.12°C (rough estimate)
• Flash Point: 86.6°C
• Appearance: /
• Density: 0.9640 (rough estimate)
• Vapor Pressure: 0.0964mmHg at 25°C
• Refractive Index: 1.5400 (estimate)
• CAS DataBase Reference: 2,2-Dimethyl-2H-1-benzopyran(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2-Dimethyl-2H-1-benzopyran(2513-25-9)
• EPA Substance Registry System: 2,2-Dimethyl-2H-1-benzopyran(2513-25-9)

Safety Data

• Hazardous Substances Data: 2513-25-9(Hazardous Substances Data)

Usage

Classification

Derivative of dibenzopyran.

Physical appearance

Yellow to greenish-yellow solid.

Main applications

Raw material for production of pharmaceuticals, dyes, and agrochemicals.

Additional properties

Antioxidant.

Use in other industries

Formulation of personal care products and cosmetics.

Stability

Relatively stable under normal conditions.

Toxicity

Not highly toxic, but proper handling and storage procedures should be followed.

InChI:InChI=1/C11H12O/c1-11(2)8-7-9-5-3-4-6-10(9)12-11/h3-8H,1-2H3

Upstream product

• 13206-46-7 2-bromo-2-methylpropanal 
• 70340-04-4 (2-hydroxybenzyl)triphenylphosphonium bromide 
• 91065-76-8 3-bromo-2,2-dimethyl-2H-[1]benzopyran 
• 541-41-3 chloroformic acid ethyl ester 
• 124-63-0 methanesulfonyl chloride 
• 115-18-4 2-methyl-3-buten-2-ol 
• 533-58-4 2-Iodophenol 
• 25974-58-7 4-methoxy-2-(3-methylbut-2-enyl)phenol 
• 3350-78-5 3,3-Dimethylacryloyl chloride 
• 527-69-5 2-furancarbonyl chloride 
• 917-64-6 methyl magnesium iodide 
• 91-64-5 coumarin 
• 6051-53-2 (E)-4-(2-hydroxyphenyl)but-3-en-2-one 
• 17235-14-2 (Z)-4-(o-hydroxyphenyl)-2-methylbut-3-en-2-ol 

Downstream Products

• 124717-83-5 (6aR,11aS)-9-Methoxy-6,6-dimethyl-6a,11a-dihydro-6H-benzo[4,5]furo[3,2-c]chromen-8-ol 
• 124717-82-4 (6aS,6bR,10aS,10bR)-9-Methoxy-6,6-dimethyl-6a,6b,10a,10b-tetrahydro-6H-5-oxa-benzo[a]biphenylene-7,10-dione 
• 1128-92-3 2-prenylphenol 
• 87512-70-7 2-(1-isobutyl-3-methylbut-2-enyl)phenol 
• 19013-07-1 desmethoxyencecalin 
• 69964-40-5 6-formyl-2,2-dimethyl-2H-chromene 
• 1198-96-5 2,2-dimethylchroman 
• 5032-03-1 (3-methyl-butyl)-phenol 
• 58740-82-2 (3R,4R)-3,4-epoxy-2,2-dimethylchromane 
• 58740-82-2 (3S,4S)-3,4-epoxy-2,2-dimethylchromane 
• 58740-82-2 3,4-epoxy-2,2-dimethylchromane 

Relevant articles and documents

Efficient One-Pot Synthesis of 2,2-Dimethyl-2 H -chromenes via Pd(II)-Catalyzed Coupling and SiO 2-Promoted Condensation of o -Halophenols with 2-Methyl-3-buten-2-ol

An efficient synthesis of 2,2-dimethyl-2H-chromenes was accomplished by Pd(II)-catalyzed coupling and SiO2-promoted condensation of o-halophenols with 2-methyl-3-buten-2-ol (1,1-dimethylallyl alcohol) in one pot. The method is very general and can be useful for the synthesis of some natural 2,2-dimethyl-2H-chromenes.

Allenes from 3-Bromo-2H-1-benzopyrans

The anionic cleavage of 2H-1-benzopyrans results in the formation of allenes.

NOUVELLES VOIES D'ACCES AUX BENZOPYRANNES-III 2H-BENZO(b)PYRANNES(CHROMENES-3)

Alkylation of o-hydroxybenzyl triphenylphosphonium salts with α-halogenated carbonyl compounds, in presence of base, gives chrom-3 enes.