1732-67-8

Basic information

• Product Name: Phosphinic acid, bis(2,4,6-trimethylphenyl)-
• CAS NO: 1732-67-8
• Molecular Formula: C18H23O2P
• Molecular Weight: 302.353
• Mol File: 1732-67-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphinic acid, bis(2,4,6-trimethylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphinic acid, bis(2,4,6-trimethylphenyl)-(1732-67-8)
• EPA Substance Registry System: Phosphinic acid, bis(2,4,6-trimethylphenyl)-(1732-67-8)

Safety Data

• Hazardous Substances Data: 1732-67-8(Hazardous Substances Data)

Upstream product

• 59452-80-1 dimesitylphosphinic amide 
• 7446-70-0 aluminium trichloride 
• 108-67-8 1,3,5-trimethyl-benzene 
• 7719-12-2 phosphorus trichloride 
• 2633-66-1 2-mesitylmagnesium bromide 
• 576-83-0 2,4,6-trimethylphenyl bromide 
• 23897-16-7 Bis(2,4,6-trimethylphenyl)phosphine oxide 

Downstream Products

• 137248-27-2 dimesitylphosphinic azide 
• 137248-28-3 methyl N,P-dimesitylphosphonamidate 
• 137295-71-7 1-mesityl-5,7-dimethyl-2,3-dihydro-1H-2,1-benzazaphosphole 1-oxide 
• 73731-22-3 dimesitylphosphinic anhydride 
• 31639-12-0 dimesitylphosphinic chloride 
• 59452-85-6 (N-p-nitrophenyl)dimesitylphosphinic amide 
• 59452-82-3 (N-phenyl)dimesitylphosphinic amide 
• 59452-80-1 dimesitylphosphinic amide 

Relevant articles and documents

Hydrolysis of Diarylphosphinic Amides in Acidic Solution: Steric Inhibition and Mechanism

The pseudo-first-order rate constants for the hydrolysis of diphenylphosphinic amide Ph2P(O)NH2 and its di-p-tolyl, di-o-tolyl, and dimesityl analogues (106kψ 3 630, 2 340, 81.0, and 3.27 s-1 respectively with H(1+) 0.0662M and T 30.2 deg C) in water-dioxan (9:1 v/v) containing perchloric acid show that reaction is sterically hindered by ortho-methyl substituents in the P-aryl groups.Steric inhibition is as great, or greater, in the hydrolysis of the corresponding (N-phenyl)diarylphosphinic amides (106kψ 5 440, 4 470, 54.9 and 0.88 s-1 respectively with H(1+) 1.36M and T 39.9 deg C) and (N-p-nitrophenyldiarylphosphinic amides (106kψ 724, 702, 6.57, and 0.098 s-1 respectively with H(1+) 2.58M and T 39.9 deg C) even though the departing amine is less nucleophilic.Such sensitivity to steric hindrance is consistent with associative (A2) mechanism for the hydrolysis of all the substrates.