54736-49-1

Basic information

• Product Name: Acenaphthylene, 1-bromo-
• Synonyms: bromoacenaphthylene;1-bromo-acenaphthylene;1-Brom-acenaphthylen
• CAS NO: 54736-49-1
• Molecular Formula: C12H7Br
• Molecular Weight: 231.092
• Mol File: 54736-49-1.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Acenaphthylene, 1-bromo-(CAS DataBase Reference)
• NIST Chemistry Reference: Acenaphthylene, 1-bromo-(54736-49-1)
• EPA Substance Registry System: Acenaphthylene, 1-bromo-(54736-49-1)

Safety Data

• Hazardous Substances Data: 54736-49-1(Hazardous Substances Data)

Upstream product

• 64-17-5 ethanol 
• 14209-08-6 1,2-dibromoacenaphthene 
• 83831-93-0 1,3-dibromo-1H,3H-naphtho<1,8-cd>thiopyran 2,2-dioxide 
• 69849-00-9 trans-1-bromo-2-chloroacenaphthene 

Relevant articles and documents

Irreversible E1cb Mechanism in the syn Eliminations from 1,2-Dihalogenoacenaphthenes Promoted by Potassium t-Butoxide in t-Butyl Alcohol

The lack of a significant leaving group effect and the preferential departure of the "poorer" leaving group suggest an irreversible E1cb mechanism for the title reactions.

Concerted and Stepwise Mechanisms in the Eliminations from 1,2-Dihalogenoacenaphthenes Promoted by Potassium tert-Butoxide and Potassium Ethoxide in the Corresponding Alcohols

Anti and syn eliminations from cis- and trans-dihalogenoacenaphthenes, respectively, have been investigated in t-BuOK-t-BuOH and EtOK-EtOH.The leaving group ability order for the syn eliminations in t-BuOK-t-BuOH is F > Cl ca.Br, which suggests an (E1cB)I mechanism.Also consistent with this mechanism is the observation that from trans-1-chloro-2-fluoroacenaphthene only HF is eliminated.In EtOK-EtOH the order of leaving group ability for the syn eliminations is Br > Cl > F, which might suggest an E2 mechanism; however, the leaving group effects are very small, anda stepwise mechanism cannot be excluded.The anti eliminations from the cis-dihalogenoacenaphthenes exhibit a substantial leaving group effect; on this basis and also on considering the β-halogen effect on the rate of elimination, a concerted mechanism is suggested.