464896-40-0

Basic information

• Product Name: (C₆H₅)2P(CH₂)18P(C₆H₅)2
• CAS NO: 464896-40-0
• Molecular Weight: 622.854
• Mol File: 464896-40-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (C₆H₅)2P(CH₂)18P(C₆H₅)2(CAS DataBase Reference)
• NIST Chemistry Reference: (C₆H₅)2P(CH₂)18P(C₆H₅)2(464896-40-0)
• EPA Substance Registry System: (C₆H₅)2P(CH₂)18P(C₆H₅)2(464896-40-0)

Safety Data

• Hazardous Substances Data: 464896-40-0(Hazardous Substances Data)

Upstream product

• 618099-69-7 C₂₈H₅₄O₄ 
• 31772-06-2 1,18-dibromooctadecane 
• 15475-27-1 potassium diphenylphosphine 

Downstream Products

• 464896-33-1 trans,trans-(C₆F₅)(Ph₂P-(CH₂)18PPh₂)2-Pt(C₂)6Pt-(Ph₂P-(CH₂)18PPh₂)(C₆F₅) 

Relevant articles and documents

Convenient and convergent syntheses of long-chain α,ω-dibromides and diphosphines of the formula X(CH2)nX (n = 18-32)

The known tetrahydropyranyl ethers Br(CH2)yOTHP (y = 6, 9, 11), which are easily prepared from commercial bromoalcohols, are sequentially treated with Mg, Li2CuCl4, and X(CH2)2X (z/X = 6/Br, 7/Br, 8/Br, 10/Br, 10/I) to give the diethers THPO(CH2)nOTHP in 68-40% yields (n = 2 y + z = 18, 19, 20, 22, 24, 28, 32). Subsequent reactions with Ph3P and 2,4,4,6-tetrabromocyclohexa-2,5-dienone give the title compounds Br(CH2)nBr in 91-75% yields. Reactions with commercial K+PPh2 give the diphosphines Ph2P(CH2)nPPh2 in 95-74% yields.