3879-07-0

Basic information

• Product Name: diethyl 2,2'-azobis[2-methylpropionate]
• Synonyms: diethyl 2,2'-azobis[2-methylpropionate];Diethyl 2,2'-azobis(isobutyrate);2,2'-Azobis(2-methylpropionic acid)diethyl ester;2,2'-Azobis(isobutyric acid ethyl) ester;2,2'-Azobisisobutyric acid diethyl ester;Brn 1713572;Diethyl azodiisobutyrate;Diethylazobisisobutyrate
• CAS NO: 3879-07-0
• Molecular Formula: C₁₂H₂₂N₂O₄
• Molecular Weight: 258.31408
• EINECS: 223-409-8
• Mol File: 3879-07-0.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 318.2°Cat760mmHg
• Flash Point: 112.9°C
• Appearance: /
• Density: 1.07g/cm³
• CAS DataBase Reference: diethyl 2,2'-azobis[2-methylpropionate](CAS DataBase Reference)
• NIST Chemistry Reference: diethyl 2,2'-azobis[2-methylpropionate](3879-07-0)
• EPA Substance Registry System: diethyl 2,2'-azobis[2-methylpropionate](3879-07-0)

Safety Data

• Hazardous Substances Data: 3879-07-0(Hazardous Substances Data)

Upstream product

• 1113-49-1 2-methylalanine ethyl ester 
• 16516-96-4 2-(1-Ethoxycarbonimidoyl-1-methyl-ethylazo)-2-methyl-propionimidic acid ethyl ester; hydrochloride 
• 34241-39-9 azobisisobutyronitrile 
• 67-56-1 methanol 
• 78-67-1 2,2'-azobis(isobutyronitrile) 
• 64-17-5 ethanol 
• 6869-07-4 2,2'-hydrazobis(2-methylpropionitrile) 
• 52301-94-7 α,α'-azo-bis-isobutyrimidic acid diethyl ester 

Downstream Products

• 1239693-69-6 Ni(C₂₀H₇N₄(COOCH₂CH₃)(C₆H₄(CH₃))4) 
• 1239693-67-4 Ni(C₂₀H₇N₄(COOCH₂CH₃)(C₆H₅)4) 

Relevant articles and documents

Preparation method of azodiisobutyrate

The invention discloses a preparation method of azodiisobutyrate. The preparation method mainly includes the steps of adding azodiisobutyronitrile, alcohol (R-OH), solvents and ion exchange resins into a reactor with stirring, reacting at a specific temperature for a period of time, and filtering to remove the ion exchange resins; concentrating filtrate and removing the solvents so as to obtain the azodiisobutyrate shown as structural formula in the description, wherein R can be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, hexyl, isooctyl, dodecyl, cetyl and octadecyl. With the ion exchange resins as a catalyst, the preparation method is convenient to implement and for after-treatment, environment friendly and little corrosive to equipment, and the catalyst is reusable, high in conversion rate and simple in process.

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).