16509-44-7

Basic information

• Product Name: 2-Butenoic acid, 2-Methyl-, ethyl ester, (2Z)-
• Synonyms: 2-Butenoic acid, 2-Methyl-, ethyl ester, (2Z)-;Angelic Acid Ethyl Ester
• CAS NO: 16509-44-7
• Molecular Formula: C₇H₁₂O₂
• Molecular Weight: 128.16898
• Mol File: 16509-44-7.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 140-144 °C
• Appearance: /
• Density: 0.916 g/cm3
• CAS DataBase Reference: 2-Butenoic acid, 2-Methyl-, ethyl ester, (2Z)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Butenoic acid, 2-Methyl-, ethyl ester, (2Z)-(16509-44-7)
• EPA Substance Registry System: 2-Butenoic acid, 2-Methyl-, ethyl ester, (2Z)-(16509-44-7)

Safety Data

• Hazardous Substances Data: 16509-44-7(Hazardous Substances Data)

Usage

Uses

Angelic Acid Ethyl Ester is a reactant used in the synthesis of bicyclo[1.1.0]butane-1 and 2-carboxylate esters.

Upstream product

• 35058-01-6 ethyl (E)-3-bromo-2-methylbut-2-enoate 
• 5837-78-5 Ethyl tiglate 
• 3070-65-3 ethyl 2-methylenebutyrate 
• 29820-55-1 Bicyclo<1.1.0>butan-1-carbonsaeure-ethylester 
• 81171-50-8 (2-Chloro-1-ethoxy-2,3-dimethyl-cyclopropoxy)-trimethyl-silane 
• 74-96-4 ethyl bromide 
• 75-03-6 ethyl iodide 
• 139564-43-5 Aethyl-3-acetoxy-2-methylbutyrat 
• 105-37-3 Ethyl propionate 
• 66069-77-0 (E)-3-bromo-2-methyl-but-2-enoyl chloride 
• 35057-99-9 (E)-3-bromo-2-methylbut-2-enoic acid 
• 80675-53-2 1-ethoxy-1-trimethylsiloxyprop-1-ene 

Downstream Products

• 7452-79-1 ethyl 2-methylbutyrate 
• 5837-78-5 Ethyl tiglate 
• 3070-65-3 ethyl 2-methylenebutyrate 
• 41159-39-1 6,6,12,12-Tetrakis(trifluormethyl)-6,12-dihydrodibenzo<1,5>-naphthyridin 

Relevant articles and documents

-

-

Hydrogenolysis of Small Cycloalkanes, XI. - Hydrogenation of Bicyclobutane-1- and -2-carboxylates

Hydrogenation of ethyl bicyclobutane-2-carboxylate (1) with Pd/C in ethanol at normal conditions leads to 95 percent of ethyl 2-methylbutyrate (2) and 5 percent of ethyl n-valerate (3).The corresponding 1-carboxylic acid ester 8 yields 99 percent of 2 but less than 1 percent of cyclobutane as well as the cis- and trans-2-methylcyclopropanecarboxylates 5 and 9.In this case 2-methylenebutyric and cis- and trans-2-methylcrotonic acid esters (10, 11a, and 12) can be detected as intermediates.From these, conclusions can be made about the mechanism at the catalyst. 5 is the main product with a poisoned catalyst.

Lewis Acid Enhancement of Photochemical Trans -> Cis Isomerization of α,β-Unsaturated Esters

-