134391-40-5

Basic information

• Product Name: 4-Benzenesulfonyl-5-tert-butyl-3-diethylamino-6-methyl-phthalic acid dimethyl ester
• CAS NO: 134391-40-5
• Molecular Weight: 475.606
• Mol File: 134391-40-5.mol

Chemical Properties

• CAS DataBase Reference: 4-Benzenesulfonyl-5-tert-butyl-3-diethylamino-6-methyl-phthalic acid dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Benzenesulfonyl-5-tert-butyl-3-diethylamino-6-methyl-phthalic acid dimethyl ester(134391-40-5)
• EPA Substance Registry System: 4-Benzenesulfonyl-5-tert-butyl-3-diethylamino-6-methyl-phthalic acid dimethyl ester(134391-40-5)

Safety Data

• Hazardous Substances Data: 134391-40-5(Hazardous Substances Data)

Upstream product

• 134391-37-0 (2-Benzenesulfonyl-3-tert-butyl-4-methyl-cyclobutadienyl)-diethyl-amine 
• 762-42-5 dimethyl acetylenedicarboxylate 

Relevant articles and documents

Cyclobutadiene Intermediates in Cycloaddition Reactions of 1-Alkynyl Sulfones with 1-Alkynylamines

The initially formed product from ynamines, such as diethyl(1-propynyl)amine, and 1-alkynyl sulfones is in fact the corresponding cyclobutadiene and not the 2-sulfinyl-4-aminofuran proposed by Himbert.The formation of the cyclobutadiene ring has been established by MS, IR, and 1H NMR data, as well as by chemical trapping experiments.