133302-95-1

Basic information

• Product Name: Cyclopentene, 1-bromo-2-methyl- (9CI)
• Synonyms: Cyclopentene, 1-bromo-2-methyl- (9CI)
• CAS NO: 133302-95-1
• Molecular Formula: C₆H₉Br
• Molecular Weight: 161.03966
• Product Categories: HALIDE
• Mol File: 133302-95-1.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Cyclopentene, 1-bromo-2-methyl- (9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclopentene, 1-bromo-2-methyl- (9CI)(133302-95-1)
• EPA Substance Registry System: Cyclopentene, 1-bromo-2-methyl- (9CI)(133302-95-1)

Safety Data

• Hazardous Substances Data: 133302-95-1(Hazardous Substances Data)

Upstream product

• 75-89-8 2,2,2-trifluoroethanol 
• 57155-01-8 1-Cyclobutylideneethyl triflate 
• 59253-86-0 2-methyl-1-cyclopentenecarbonyl chloride 
• 67209-77-2 2-methyl-cyclopent-1-enecarboxylic acid 
• 3168-90-9 1-(2-methylcyclopent-1-enyl)ethanone 
• 75415-78-0 1,2-dibromocyclopentene 
• 74-88-4 methyl iodide 
• 176980-06-6 2-Methyl-cyclopent-1-enecarboxylic acid 4-methyl-2-thioxo-thiazol-3-yl ester 

Downstream Products

• 1356829-82-7 (3aR,6aR)-6a-methyl-3-phenyl-4,5,6,6a-tetrahydropentalen-1(3aH)-one 
• 1356829-83-8 (3aR,6aR)-3-(4-chlorophenyl)-6a-methyl-4,5,6,6a-tetrahydropentalen-1(3aH)-one 
• 1356829-85-0 (3aR,6aR)-3-(4-methoxyphenyl)-6a-methyl-4,5,6,6a-tetrahydropentalen-1(3aH)-one 

Relevant articles and documents

Stereoselective migration of sterically hindered organoboranes in cyclic and acyclic systems. A stereoselective allylic C-H activation reaction

The thermal migration of cyclic and acyclic organoboranes were studied. In most cases, a stereoselective 1,2-dyotropic migration was observed, allowing the stereocontrol of three contiguous chiral centers. Scope and limitations of this thermal migration are presented.

Vinyl Cations, 36. Solvolysis of Cycloalkylidenemethyl and 1-Cyclopenten-1-yl Triflates

Cyclohexylidenemethyl triflate (2), cyclobutylidenemethyl triflate (5), 1-cyclopenten-1-yl triflate (7), bicyclohex-2-en-2-yl triflate (9), 1-cyclobutylideneethyl triflate (19), and 2-methyl-1-cyclopenten-1-yl triflate (29) were solvolyzed in solvents of various ionizing power and nucleophilicity and the solvolysis products were identified.The cyclobutylidenealkyl triflates solvolyze via a vinyl cation mechanism involving ion pairs with rearrangement to cyclopentene and cyclopentanone compounds.The 1-cyclopenten-1-yl triflates do not produce vinyl cation intermediates but give only the corresponding ketones via an O - S bond cleavage of the triflate group.