1,7-DIMETHYLFLUORENE

Base Information

• Chemical Name: 1,7-DIMETHYLFLUORENE
• CAS No.: 442-66-0
• Molecular Formula: C₁₅H₁₄
• Molecular Weight: 194.276
• Hs Code.: 2902909090
• Mol file: 442-66-0.mol

Synonyms:Fluorene,1,7-dimethyl- (6CI,8CI); Gibberen; Gibberene

Chemical Property of 1,7-DIMETHYLFLUORENE

Chemical Property:

• Vapor Pressure: 0.000342mmHg at 25°C
• Refractive Index: 1.618
• Boiling Point: 329.4°C at 760 mmHg
• Flash Point: 160.8°C
• PSA: 0.00000
• Density: 1.074g/cm³
• LogP: 3.87460
• Storage Temp.: Refrigerator
• Solubility.: Chloroform (Slightly), Ethyl Acetate (Slightly)

Purity/Quality:

99%min ^*data from raw suppliers

1,7-Dimethylfluorene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: 1,7-Dimethylfluorene is a product of the selenium dehydrogenation of gibberic acid. 1,7-Dimethylfluorene is a product of the selenium dehydrogenation of gibberic acid. 1,7-Dimethylfluorene is also one of the many polyaromatic hydrocarbons (PAH) that are found within lake sediments, negatively impacting zoo plankton changes in the water, as well as the ecosystems that reside there.

Technology Process of 1,7-DIMETHYLFLUORENE

There total 21 articles about 1,7-DIMETHYLFLUORENE which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

(2-Methoxycarbonylmethyl-7-methylinden-3-yl)-propionsaeure-methylester (23342-60-1) → 1,7-Dimethyl-fluoren (442-66-0)

Guidance literature:

Multi-step reaction with 4 steps

1: H₂ / Pd / ethanol

2: KOH / methanol

3: PbCO₃ / 295 - 310 °C

4: (i) Et₂O, (ii) TsOH, benzene, (iii) Pd-C

With potassium hydroxide; lead(II) carbonate; hydrogen; palladium; In methanol; ethanol;

Reference yield:

2-Carboxymethyl-4-methyl-indanon-(1) (91963-22-3) → 1,7-Dimethyl-fluoren (442-66-0)

Guidance literature:

Multi-step reaction with 7 steps

1: (i) KOtBu, tBuOH, (ii) /BRN= 2110526/, (iii) /BRN= 1098229/, H₂SO₄

2: aq. HBr / acetic acid

3: H₂SO₄

4: H₂ / Pd / ethanol

5: KOH / methanol

6: PbCO₃ / 295 - 310 °C

7: (i) Et₂O, (ii) TsOH, benzene, (iii) Pd-C

With potassium hydroxide; lead(II) carbonate; sulfuric acid; hydrogen bromide; hydrogen; palladium; In methanol; ethanol; acetic acid;

Reference yield:

2-(4-Methyl-1-oxo-indan-2-yl)-malonic acid diethyl ester (15247-87-7) → 1,7-Dimethyl-fluoren (442-66-0)

Guidance literature:

Multi-step reaction with 8 steps

1: (i) KOH, MeOH, (ii) (decarboxylation)

2: (i) KOtBu, tBuOH, (ii) /BRN= 2110526/, (iii) /BRN= 1098229/, H₂SO₄

3: aq. HBr / acetic acid

4: H₂SO₄

5: H₂ / Pd / ethanol

6: KOH / methanol

7: PbCO₃ / 295 - 310 °C

8: (i) Et₂O, (ii) TsOH, benzene, (iii) Pd-C

With potassium hydroxide; lead(II) carbonate; sulfuric acid; hydrogen bromide; hydrogen; palladium; In methanol; ethanol; acetic acid;

upstream raw materials:

1,7-dimethyl-9H-fluoren-9-one

methyl magnesium iodide

2,8-Dimethyl-2,3,4,9-tetrahydro-1H-fluorene-2-carboxylic acid

2-Methoxy-1,7-dimethyl-fluorenon