123207-11-4

Basic information

• Product Name: 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3,3-dimethoxy-butyric acid methyl ester
• Synonyms: 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3,3-dimethoxy-butyric acid methyl ester
• CAS NO: 123207-11-4
• Molecular Weight: 329.191
• Mol File: 123207-11-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3,3-dimethoxy-butyric acid methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3,3-dimethoxy-butyric acid methyl ester(123207-11-4)
• EPA Substance Registry System: 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3,3-dimethoxy-butyric acid methyl ester(123207-11-4)

Safety Data

• Hazardous Substances Data: 123207-11-4(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 117745-73-0 2-[1-(4-Bromo-phenyl)-meth-(Z)-ylidene]-3-oxo-butyric acid methyl ester 
• 149-73-5 trimethyl orthoformate 

Downstream Products

• 33626-98-1 methyl 6-bromo-2-naphthoate 

Relevant articles and documents

Sequential Acetalization-Pyrolysis of α-Acetylcinnamates and α-Acetylbenzalacetones. A Method for the Generation of 2-Carbonyl-Subsituted Naphthalenes

Substituted 2-acetonaphthones and 2-naphthoate methyl esters can be generated from benzaldehydes in a sequence of three reaction steps.Knoevenagel condensation of a benzaldehyde with 2,4-pentandione of methyl acetoacetate yields α-carbonyl-substituted benzalacetones.The α-carbonyl-substituted benzalacetones are then cyclized to generate the α-carbonyl-substituted naphthalenes by a sequential acetalization with trimethyl orthoformate followed by subsequent pyrolysis of the dimethyl acetal either in the vapor phase at 475 deg C or by being heated in boiling 1-methylnaphthalene. 2-Acetonaphthones are obtained when 2,4-pentanedione is used and 2-naphthoate methyl esters are obtained from methyl acetoacetate.