83650-24-2

Basic information

• Product Name: 1,2-dicarbomethoxy-3,6-dimethoxy-1,4-cyclohexa-1,4-diene
• Synonyms: 1,2-dicarbomethoxy-3,6-dimethoxy-1,4-cyclohexa-1,4-diene
• CAS NO: 83650-24-2
• Molecular Weight: 256.255
• Mol File: 83650-24-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,2-dicarbomethoxy-3,6-dimethoxy-1,4-cyclohexa-1,4-diene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-dicarbomethoxy-3,6-dimethoxy-1,4-cyclohexa-1,4-diene(83650-24-2)
• EPA Substance Registry System: 1,2-dicarbomethoxy-3,6-dimethoxy-1,4-cyclohexa-1,4-diene(83650-24-2)

Safety Data

• Hazardous Substances Data: 83650-24-2(Hazardous Substances Data)

Upstream product

• 24000-38-2 1,4-dimethoxy-1,3-butadiene 
• 762-42-5 dimethyl acetylenedicarboxylate 

Downstream Products

• 32136-52-0 dimethyl 3-methoxyphthalate 
• 65489-47-6 dimethyl 3,6-dimethoxyphthalate 
• 14963-97-4 3-methoxyphthalic acid 

Relevant articles and documents

1,4-dimethoxy-1,3-butadiene as a Donor Diene in Diels-Alder Cycloadditions

The title compound (DMBU) is a useful diene in cycloadditions.Since DMBU is readily obtained in two steps from 1,4-dihydroxy-2-butyne, it should be regarded as an inexpensive and abundant starting material.Diels Alder products were obtained from DMBU and the dienophiles, dimethyl acetylenedicarboxylate, ethyl propiolate, benzyne, fumaronitrile, tetracyanoethene, maleic anhydride, 1,2-dibenzoylethene, diethyl azodicarboxylate, and four 1,4-quinones.The aromatization of some of these products was studied.As determined by gas chromatography and 1H NMR, DMBU is obtained as three isomers Z,Z/Z,E/E,E = (60 +/-3):(34 +/- 3):(6 +/- 2).While the Z,Z form is less reactive, the Z,E and E,E isomers react with tetracyanoethene at rates similar to that of 1-methoxy-1,3-butadiene.