22874-80-2

Basic information

• Product Name: butyl pent-4-enoate
• Synonyms: 4-Pentenoic acid butyl ester
• CAS NO: 22874-80-2
• Molecular Formula: C₉H₁₆O₂
• Molecular Weight: 156.2221
• Mol File: 22874-80-2.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 171°C at 760 mmHg
• Flash Point: 59.1°C
• Density: 0.889g/cm³
• Vapor Pressure: 1.43mmHg at 25°C
• Refractive Index: 1.428
• CAS DataBase Reference: butyl pent-4-enoate(CAS DataBase Reference)
• NIST Chemistry Reference: butyl pent-4-enoate(22874-80-2)
• EPA Substance Registry System: butyl pent-4-enoate(22874-80-2)

Safety Data

• Hazardous Substances Data: 22874-80-2(Hazardous Substances Data)

Upstream product

• 33574-02-6 cyclopropylmethyl iodide 
• 201230-82-2 carbon monoxide 
• 71-36-3 butan-1-ol 
• 591-80-0 pent-4-enoic acid 

Relevant articles and documents

Preparation of α-methylene-γ butyrolactones with difluoromethylene functionalities

4-(1,1-Difluoro-2-ethoxycarbonyl)methyl-γ-butyrolactone (1) was prepared from the Reformatsky-type reaction of n-butyl 3-formylpropanoate with ethyl bromodifluoroacetate in Zn-THF system, and compound (1) was converted to α-methylene-γ-butyrolactone derivatives with a difluoromethylene unit at γ-position.

Effective acceleration of atom transfer carbonylation of alkyl iodides by metal complexes. Application to the synthesis of the hinokinin precursor and dihydrocapsaicin

Atom transfer carbonylation (ATC) of alkyl iodides leading to carboxylic acid esters is effectively accelerated by Pd(PPh3)4 and Mn2(CO)10 under photoirradiation conditions. In the presence of amines, Pd(0) complexes affected double carbonylations leading to α-keto amides, whereas Mn2(CO)10 accelerated only a single carbonylation reaction leading to the corresponding amides. The Pd(0)-accelerated ATC system was successfully applied to the synthesis of hinokinin and dihydrocapsaicin.