13337-33-2

Basic information

• Product Name: 1-dichlorophosphoryl-3-methyl-buta-1,2-diene
• Synonyms: 1-dichlorophosphoryl-3-methyl-buta-1,2-diene;(3-Methyl-1,2-butadienyl)dichlorophosphine oxide;1-(Dichlorophosphinyl)-3-methyl-1,2-butadiene
• CAS NO: 13337-33-2
• Molecular Formula: C₅H₇Cl₂OP
• Molecular Weight: 184.99
• Mol File: 13337-33-2.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 238.8°Cat760mmHg
• Flash Point: 98.2°C
• Appearance: /
• Density: 1.232g/cm³
• Vapor Pressure: 0.0643mmHg at 25°C
• Refractive Index: 1.467
• CAS DataBase Reference: 1-dichlorophosphoryl-3-methyl-buta-1,2-diene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-dichlorophosphoryl-3-methyl-buta-1,2-diene(13337-33-2)
• EPA Substance Registry System: 1-dichlorophosphoryl-3-methyl-buta-1,2-diene(13337-33-2)

Safety Data

• Hazardous Substances Data: 13337-33-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C5H7Cl2OP/c1-5(2)3-4-9(6,7)8/h4H,1-2H3

Upstream product

• 64927-48-6 (2-chloro-3-methyl-2-butenyl)phosphonic dichloride 
• 115-19-5 2-methyl-but-3-yn-2-ol 

Downstream Products

• 332944-62-4 2-(3-methyl-buta-1,2-dienyl)-2-oxo-5-phenyl-2λ⁵-[1,3,2]dioxaphospholan-4-one 

Relevant articles and documents

Reaction of 2-chloro-5,5-dimethyl-2,5-dihydro-1,2λ5-oxaphosphole 2-oxide with organomagnesium compounds

Simple procedures have been developed for the synthesis of 2-chloro-5,5-dimethyl-2,5-dihydro- 1,2λ5-oxaphosphole 2-oxide by one-pot electrophilic cyclization of 3-methylbuta-1,2-dien-1-ylphosphonic dichloride and of (Z)-4-[dialkyl(diphenyl)phos

Synthesis of thiophene-2-phosphonates via α,β-unsaturated sulfines as intermediates

Heteroconjugate addition of various alkyllithium reagents to α-silylallenephosphonates 3b,c has been accomplished in high yields.The formation of thiophene-2-phosphonates 5, by heteroconjugate addition of organolithium to 3bc, followed by treatment with sulfur dioxide, proceeds in reasonable yields via the intermediate formation of α,β-unsaturated sulfines 4.An alternative synthesis of the heteroconjugate addition product diethyl 1-(trimethylsilyl)-2,3-dimethylbut-2-ene-1-phosphonate 6a from 2,3-dimethylbut-2-enyl bromide has also been described.