16489-03-5

Basic information

• Product Name: 3-Pentenoic acid, 2-methyl-, ethyl ester, (E)-
• CAS NO: 16489-03-5
• Molecular Formula: C8H14O2
• Molecular Weight: 142.198
• Mol File: 16489-03-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-Pentenoic acid, 2-methyl-, ethyl ester, (E)-(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Pentenoic acid, 2-methyl-, ethyl ester, (E)-(16489-03-5)
• EPA Substance Registry System: 3-Pentenoic acid, 2-methyl-, ethyl ester, (E)-(16489-03-5)

Safety Data

• Hazardous Substances Data: 16489-03-5(Hazardous Substances Data)

Upstream product

• 53399-81-8 ethyl 2-methyl-4-pentenoate 

Relevant articles and documents

Selective Isomerization of Terminal Alkenes to (Z)-2-Alkenes Catalyzed by an Air-Stable Molybdenum(0) Complex

Positional and stereochemical selectivity in the isomerization of terminal alkenes to internal alkenes is observed using the cis-Mo(CO)4(PPh3)2 precatalyst. A p-toluenesulfonic acid (TsOH) cocatalyst is essential for catalyst activity. Various functionalized terminal alkenes have been converted to the corresponding 2-alkenes, generally favoring the Z isomer with selectivity as high as 8:1 Z:E at high conversion. Interrogation of the catalyst initiation mechanism by 31P NMR reveals that cis-Mo(CO)4(PPh3)2 reacts with TsOH at elevated temperatures to yield a phosphine-ligated Mo hydride (MoH) species. Catalysis may proceed via 2,1-insertion of a terminal alkene into a MoH group and stereoselective β-hydride elimination to yield the (Z)-2-alkene.