56956-46-8

Basic information

• Product Name: undeca-1,2-diene
• Synonyms: 1,2-Undecadiene
• CAS NO: 56956-46-8
• Molecular Formula: C₁₁H₂₀
• Molecular Weight: 152.2765
• Mol File: 56956-46-8.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 202°C at 760 mmHg
• Flash Point: 64.5°C
• Density: 0.746g/cm³
• Vapor Pressure: 0.426mmHg at 25°C
• Refractive Index: 1.43
• CAS DataBase Reference: undeca-1,2-diene(CAS DataBase Reference)
• NIST Chemistry Reference: undeca-1,2-diene(56956-46-8)
• EPA Substance Registry System: undeca-1,2-diene(56956-46-8)

Safety Data

• Hazardous Substances Data: 56956-46-8(Hazardous Substances Data)

Upstream product

• 111462-99-8 bromo-3 undecyne-1 
• 70063-88-6 (+/-)-undec-1-yn-3yl acetate 
• 73642-96-3 (Z)-2-Chlor-2-undecen 
• 15997-12-3 1,1-dichloro-2-octyl cyclopropane 
• 73642-98-5 2-chloro-1-undecen 
• 73642-94-1 2,2-dichloro-undecane 
• 71606-97-8 (1-methyl-decylidene)-nitro-amine 

Downstream Products

• 124-19-6 nonan-1-al 
• 2404-44-6 1,2-Epoxydecane 
• 872-05-9 1-Decene 
• 41136-98-5 3-hydroxy-2-undecanone 
• 100545-43-5 2-oxoundecan-3-yl acetate 
• 41446-54-2 (Z)-tridec-4-ene 
• 821-95-4 1-undecene 
• 2244-02-2 2-undecene 

Relevant articles and documents

Preparation of 1,2-Dienes by the Palladium-Catalyzed Hydrogenolysis of 3-Methoxycarbonyloxy-1-alkynes with Ammonium Formate

A useful preparative method for 1,2-dienes from 3-methoxycarbonyloxy-1-alkynes by the palladium-catalyzed hydrogenolysis with ammonium formate is described. 3-Methoxycarbonyloxy-1-alkynes are prepared by the addition of magnesium acetylide to ketones or aldehydes, followed by quenching with methyl chloroformate.

The Reaction of 2-Alkyl-1,1-dichlorocyclopropanes with Lithium Naphtalene

2-Alkyl-1,1-dichlorocyclopropanes react with lithium naphthalene to give a mixture of dechlorinated alkylcyclopropanes and unsaturated hydrocarbons.For example, a mixture of octylcyclopropane and undec-1-yne was obtained from the reaction of 1,1-dichloro-2-octylcyclopropane and lithium naphthalene.