71674-93-6

Basic information

• Product Name: Pentanedioic acid, 2,2-dimethyl-4-methylene-, dimethyl ester
• CAS NO: 71674-93-6
• Molecular Formula: C10H16O4
• Molecular Weight: 200.235
• Mol File: 71674-93-6.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Pentanedioic acid, 2,2-dimethyl-4-methylene-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Pentanedioic acid, 2,2-dimethyl-4-methylene-, dimethyl ester(71674-93-6)
• EPA Substance Registry System: Pentanedioic acid, 2,2-dimethyl-4-methylene-, dimethyl ester(71674-93-6)

Safety Data

• Hazardous Substances Data: 71674-93-6(Hazardous Substances Data)

Upstream product

• 1101-55-9 7,7-Diphenyl-p-mentha-1⁽⁷⁾,2,5-trien-8-carbonsaere-methylester 
• 80-62-6 methacrylic acid methyl ester 
• 2589-57-3 2-(1-methoxycarbonyl-1-methylethylazo)-2-methylpropionic acid methyl ester 
• 90683-33-3 (+/-)-tetramethyl 2,4,5,7-tetramethyloctane-2,4,5,7-tetracarboxylate 
• 186581-53-3 diazomethane 
• 17342-77-7 crotonic acid sodium salt 
• 5536-61-8 sodium methacrylate 

Downstream Products

• 1392192-35-6 AFM-4 
• 1392192-31-2 C₂₆H₃₂O₈ 
• 4513-62-6 dimethyl 2-methyl-5-methylenehexanodioate 

Relevant articles and documents

Thermal Cross-coupled Dimerisation of Alkali and Alkaline Earth Metal Salts of Methacrylic-Crotonic Acid Binary Systems in the Solid State

Thermal reaction of sodium and potassium salts of methacrylic-crotonic acids in the solid state selectively affords a cross-coupled dimer, dimethyl hex-1-ene-2,4-dicarboxylate.

Cobalt-catalysed Oligomerisation of Methyl Methacrylate; Reactivation of Oligomers by Hydrocobaltation

Irradiation of methyl methacrylate (MMA) in the presence of acyl- and alkyl-cobalt 'salophen' reagents leads to good yields of oligomers by way of a novel catalytic 'hydrocobaltation-dehydrocobaltation' sequence; hydrocobaltation of the dimer (11) followed by conversion of the latter into (15) in the presence of styrene demonstrates the possibilities for 'reactivation' of oligomers of MMA for further chemical studies.

The Self-Reactions of 1-Methoxycarbonyl-1-methylethyl and Higher Ester Radicals: Combination vs Disproportionation and Oligomeric Products from Secondary Reactions

The geminate self-reactions of the title methyl, ethyl and butyl ester radicals (2a-c), formed by decomposition of the corresponding azo precursors (1a-c) in the presence of stable nitroxide radical scavengers, were found on the basis of product analysis to comprise combination and disproportionation in the ratios 56 : 44 (methyl), 58 : 42 (ethyl) and 47 : 53 (butyl).In the absence of radical scavengers, extensive oligomerization is observed.Hydrogenation and degradation were used in conjunction with g.l.c.-m.s. to deduce the identities of the dimeric, trimeric and tetrameric products, which were in most cases subsequently confirmed by isolation and n.m.r. analysis.Of particular interest is the highly regioselective disproportionation of radical (3) to give dimethyl 4-methylpent-1-ene-2,4-dicarboxylate (8), and the further reaction of (8) with (2a) to form branched oligomers (10) and (15).