19037-72-0

Basic information

• Product Name: 4,4-dimethylcyclopentene
• Synonyms: 4,4-dimethylcyclopentene;4,4-Dimethyl-1-cyclopentene;Einecs 242-770-2
• CAS NO: 19037-72-0
• Molecular Formula: C₇H₁₂
• Molecular Weight: 96.17018
• EINECS: 242-770-2
• Mol File: 19037-72-0.mol
• Article Data: 4

Chemical Properties

• Melting Point: -108.93°C (estimate)
• Boiling Point: 99.75°C (estimate)
• Flash Point: °C
• Appearance: /
• Density: 0.7660
• Vapor Pressure: 71mmHg at 25°C
• Refractive Index: 1.4200
• CAS DataBase Reference: 4,4-dimethylcyclopentene(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4-dimethylcyclopentene(19037-72-0)
• EPA Substance Registry System: 4,4-dimethylcyclopentene(19037-72-0)

Safety Data

• Hazardous Substances Data: 19037-72-0(Hazardous Substances Data)

Usage

InChI:InChI=1/C7H12/c1-7(2)5-3-4-6-7/h3-4H,5-6H2,1-2H3

Upstream product

• 19184-67-9 methyl 3,3-dimethylglutarate 
• 54639-78-0 2-hydroxy-4,4-dimethylcyclopentan-1-one 
• 66606-40-4 4,4-dimethylcyclopentane-1,2-diol 
• 85390-85-8 3,3-Dimethyl(diiodomethyl)cyclobutane 
• 91084-92-3 1,2-dibromo-4,4-dimethylcyclopentane 
• 22748-16-9 4,4-dimethylcyclopent-2-ene-1-one 
• 38312-94-6 4,4-dimethyl-1-cyclopentene-1-carboxaldehyde 

Downstream Products

• 4586-22-5 α-caryophyllene alcohol 
• 59372-72-4 (+)-hirsutene 

Relevant articles and documents

Free Radical Fragmentation of Photoadduct Derivatives. Formal Synthesis of Pentalenene

A series of photoadducts 3a-d are converted to cyclobutylcarbinyl iodides 6a-d.Free radical fragmentation of the iodides yields bicyclo carbon skeletons 7a-d which are present in a variety of natural products.Application of this methodology to terpenoid synthesis is illustrated by the preparation of unsaturated ketone 19 in only six steps (33percent overall yield).As 19 has been converted to pentalenene (1) this constitutes a formal synthesis of the angular triquinane sesquiterpenoid.

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SYNTHESIS OF dl-PENTALENOLACTONES E AND F.

The methyl esters of ( plus or minus )-pentalenolactone E and F have been synthesized by a route based on the intramolecular insertion of an alpha -acylcarbene into an unactivated C-H bond to effect closure of the key fused delta -lactone ring system. Lactone reduction, deketalization, and selective acetalization of the derived lactol provided as a mixture of epimers.