844468-42-4

Basic information

• Product Name: Phosphonium, (2-hydroxyphenyl)triphenyl-, bromide
• CAS NO: 844468-42-4
• Molecular Formula: C24H20OP.Br
• Molecular Weight: 435.3
• Mol File: 844468-42-4.mol

Chemical Properties

• CAS DataBase Reference: Phosphonium, (2-hydroxyphenyl)triphenyl-, bromide(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphonium, (2-hydroxyphenyl)triphenyl-, bromide(844468-42-4)
• EPA Substance Registry System: Phosphonium, (2-hydroxyphenyl)triphenyl-, bromide(844468-42-4)

Safety Data

• Hazardous Substances Data: 844468-42-4(Hazardous Substances Data)

Upstream product

• 95-56-7 2-hydroxybromobenzene 
• 603-35-0 triphenylphosphine 

Downstream Products

• 16522-52-4 2-hydroxyphenyldiphenylphosphine oxide 
• 21230-91-1 (2-hydroxyphenyl)triphenylphosphonium iodide 
• 70013-27-3 6-(triphenyl-λ⁵-phosphanylidene)cyclohexa-2,4-dien-1-one 
• 934753-60-3 Methyl E-4-{7-cyano-3-[2-(2-hydroxyphenyl)vinyl]heptyl}benzoate 

Relevant articles and documents

Synthesis of tertiary phosphine oxides by alkaline hydrolysis of quaternary phosphonium zwitterions using excess t-BuOK and stoichiometric water

Hydrolysis of quaternary arylphosphonium zwitterions bearing COO? and those in situ generated from the corresponding salts bearing Ac or OH at the aryl ring by using excess t-BuOK and stoichiometric water affords tertiary arylphosphine oxides in moderate to excellent yield, in contrast to hydrolysis of these zwittertion or salts in aqueous NaOH that mainly provides phosphine oxides with the loss of the aryl group. Under the t-BuOK/water conditions, hydrolysis of carbonyl stabilized ylides Ph3P = CHCOR (R = Ph, Me, and OEt), which partially exist as phosphonium enolates, prefers to produce Ph2P(O)CH2COR. Further reduction of Ph2P(O)CH2COMe by PhSiH3 allows the preparation of Ph2PCH2COMe in 43% yield.

Tetraarylphosphonium Salt-Catalyzed Synthesis of Oxazolidinones from Isocyanates and Epoxides

Preparation of a range of oxazolidinones, including enantioenriched N-aryl-substituted oxazolidinones, in which tetraarylphosphonium salts (TAPS) catalyze the [3 + 2] coupling reaction of isocyanates and epoxides effectively, is described. The key finding is a Br?nsted acid/halide ion bifunctional catalyst that can accelerate epoxide ring opening with high regioselectivity. Mechanistic studies disclosed that the ylide generated from TAPS, along with the formation of halohydrins, plays a crucial role in the reaction with isocyanates.

Tetraarylphosphonium inner-salts (TAPIS) as both Lewis base catalyst and phase tag

Tetraarylphosphonium inner-salts (TAPIS) have been designed, synthesized and verified as recyclable and reusable Lewis base catalysts. The resulted TAPIS catalyst has been successfully applied in Michael addition, cyanation and trifluoromethylation reactions.

LATENT CATALYST FOR EPOXY RESIN, EPOXY RESIN COMPOSITION, AND SEMICONDUCTOR DEVICE

The present invention provides a latent catalyst for epoxy resin, comprising: a cation moiety having an activity of accelerating curing reaction of epoxy resin; and a silicate anion moiety of suppressing the curing reaction-accelerating activity. Also dis