157170-48-4

Basic information

• Product Name: dimethyl 5-bromo-4-chloro-4-fluoro-3,4,5,6-tetrahydrophthalate
• Synonyms: dimethyl 5-bromo-4-chloro-4-fluoro-3,4,5,6-tetrahydrophthalate
• CAS NO: 157170-48-4
• Molecular Weight: 329.55
• Mol File: 157170-48-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: dimethyl 5-bromo-4-chloro-4-fluoro-3,4,5,6-tetrahydrophthalate(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl 5-bromo-4-chloro-4-fluoro-3,4,5,6-tetrahydrophthalate(157170-48-4)
• EPA Substance Registry System: dimethyl 5-bromo-4-chloro-4-fluoro-3,4,5,6-tetrahydrophthalate(157170-48-4)

Safety Data

• Hazardous Substances Data: 157170-48-4(Hazardous Substances Data)

Upstream product

• 99070-89-0 4-chloro-cyclohexa-1,4-diene-1,2-dicarboxylic acid dimethyl ester 

Downstream Products

• 110706-50-8 dimethyl 4-fluorophthalate 

Relevant articles and documents

Synthesis of 4-substituted phthalic anhydrides

Disclosed is a method of making a 4-substituted phthalic anhydride. A halomaleic (including halofumaric anhydride (or the acid or ester thereof) is made by the reaction of-maleic anhydride with chlorine or bromine. The halomaleic anhydride is reacted with a conjugated diene to form a first cycloadduct having the formula STR1 The first cycloadduct is heated to eliminate HX and produce a second cycloadduct having the formula STR2 The second cyclo adduct is dehydrogenated to produce a 4substituted phthalic anhydride which has the formula STR3 where R1, R2, and R4 are preferably H and R3 is preferably Cl or F.