75980-60-8

Basic information

• Product Name: Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide
• Synonyms: Diphenyl(2,4,6-trimethylbenzoyl);SPEEDCURE TPO;Diphenyl-(2,4,6-Trimethylbenzolyl)-Phosphine Oxide(SP-2,4,6);2,4,6-TRIMETHYLBENZOYLDIPHENYL PHOSPHINE OXIDE TPO;Diphenyl(2,4,6-trimethylbenzoyl)phosphinoxid;YF-PI TPO;2,4,6-TRIMETHYLBENZOYLDI PHENYLPHOSPHINOXIDE;diphenyl(2,4,6-trimethylbenzoyl)phosphine
• CAS NO: 75980-60-8
• Molecular Formula: C₂₂H₂₁O₂P
• Molecular Weight: 348.37
• EINECS: 278-355-8
• Product Categories: Functional Materials;Photopolymerization Initiators;Miscellaneous;Organic Photoinitiators;Polymerization Initiators;chemical additive
• Mol File: 75980-60-8.mol
• Article Data: 36

Chemical Properties

• Melting Point: 88-92 °C(lit.)
• Boiling Point: 519.6 °C at 760 mmHg
• Flash Point: >230 °F
• Appearance: white or cream powder
• Density: 1.12 g/mL at 25 °C(lit.)
• Vapor Pressure: 6.71E-11mmHg at 25°C
• Refractive Index: n20/D 1.475(lit.)
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: soluble in Methanol
• Water Solubility: 3.4mg/L at 20℃
• Stability: Stable. Incompatible with strong oxidizing agents.
• CAS DataBase Reference: Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide(CAS DataBase Reference)
• NIST Chemistry Reference: Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide(75980-60-8)
• EPA Substance Registry System: Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide(75980-60-8)

Safety Data

• Hazard Codes: Xn,N
• Statements: 22-62-51/53
• Safety Statements: 22-24/25-61-36/37
• RIDADR: UN 3077 9 / PGIII
• WGK Germany: 2
• RTECS: SZ0395000
• HazardClass: 9
• PackingGroup: III
• Hazardous Substances Data: 75980-60-8(Hazardous Substances Data)

Usage

Uses

Used in Ink Industry:
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide is used as a photo initiator for the curing process in many kinds of ink industries. Its high reactivity and efficiency enable faster curing times and improved ink performance.
Used in Electronics Industry:
In the electronics industry, Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide is used in the photo-crosslinking of PMMA composite, which can be further used as a gate insulator in organic thin film transistors (OTFTs). This application helps improve the performance and stability of electronic devices.
Used in Coatings Industry:
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide is used in the formation of UV curable urethane-acrylate coatings. Its ability to initiate photo-crosslinking reactions allows for the creation of durable and high-quality coatings with excellent adhesion and resistance properties.
Used in Chemical Synthesis:
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide may also be used in the photoinduced reaction for the formation of organophosphine compounds. These compounds have potential applications as ligands with metal catalysts and reagents, further expanding the utility of this versatile photo initiator.

Flammability and Explosibility

Nonflammable

InChI:InChI=1/C22H21O2P/c1-16-14-17(2)21(18(3)15-16)22(23)25(24,19-10-6-4-7-11-19)20-12-8-5-9-13-20/h4-15H,1-3H3

Synthetic route

α-hydroxy-(2,4,6-trimethylbenzyl)diphenyl phosphine oxide → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With manganese(IV) oxide In dichloromethane at 20℃;	98%
With vanadium(V) oxide; dihydrogen peroxide at 8 - 25℃; for 3.5h; Reagent/catalyst; Green chemistry;	96%
With tert.-butylhydroperoxide In dichloromethane at 5 - 20℃; for 6.5h; Reagent/catalyst;	92.5%

mesytaldehyde (487-68-3) + Diphenylphosphine oxide (4559-70-0) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: mesytaldehyde; Diphenylphosphine oxide In dichloromethane for 6h; Green chemistry; Stage #2: With ammonium metavanadate; dihydrogen peroxide at 8 - 20℃; for 5.5h; Reagent/catalyst; Green chemistry;	98%

diphenyl n-pentyloxyphosphine (39150-04-4) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 9.33333h;	95.8%

(sec-butyloxy)di(phenyl)phosphine (65119-90-6) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 7.33333h;	95.6%

Ethyl diphenylphosphinite (719-80-2) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 40 - 90℃; for 8h; Time; Green chemistry;	95.1%
With N,N-dimethyl-cyclohexanamine at 80 - 85℃; Product distribution / selectivity;

diphenyl n-propoxyphosphine (92556-46-2) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 7.33333h;	95.1%

diphenyl sec-pentyloxyphosphine (38011-61-9) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 7.33333h;	94.9%

(n-butyloxy)di(phenyl)phosphine (13360-94-6) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 9.33333h;	94.8%

(2,4,6-trimethylbenzyl)diphenylphosphine oxide (149731-53-3) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With tert.-butylhydroperoxide; bis(acetylacetonate)oxovanadium In dichloromethane at 20℃;	94%

ethanol (64-17-5) + chloro-diphenylphosphine (1079-66-9) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: ethanol With sodium In toluene at 65 - 70℃; for 2h; Stage #2: chloro-diphenylphosphine In toluene at 5 - 10℃; for 1h; Stage #3: mesitylene-2-carboxylic acid chloride In toluene at 70 - 75℃; for 5h; Temperature; Solvent;	92.2%

(trichloromethyl)mesitylene (707-74-4) + chloro-diphenylphosphine (1079-66-9) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: chloro-diphenylphosphine With potassium hydroxide In toluene at 20℃; for 2.5h; Inert atmosphere; Stage #2: (trichloromethyl)mesitylene With iron(III) chloride at 90℃; Inert atmosphere;	91%
Stage #1: (trichloromethyl)mesitylene; chloro-diphenylphosphine With magnesium In tetrahydrofuran Reflux; Stage #2: With hydrogenchloride; dihydrogen peroxide In water	87 g

isopropyl diphenylphosphinite (27350-46-5) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
at 50 - 90℃; for 7.33333h;	90.7%

(trichloromethyl)mesitylene (707-74-4) + Diphenylphosphine oxide (4559-70-0) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: (trichloromethyl)mesitylene; Diphenylphosphine oxide With iron(III) chloride In toluene at 90℃; for 3h; Inert atmosphere; Stage #2: With water; sodium hydrogencarbonate In toluene at 20℃; Inert atmosphere;	89%
Stage #1: Diphenylphosphine oxide With n-butyllithium In tetrahydrofuran for 0.5h; Cooling with ice; Stage #2: (trichloromethyl)mesitylene In tetrahydrofuran for 0.5h;	87%

Diphenylphosphine oxide (4559-70-0) + mesitylene-2-carboxylic acid chloride (938-18-1) → C34H32O3P2 + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With potassium hydroxide In 1,2-dichloro-ethane at -10℃; Solvent; Reagent/catalyst; Temperature; Inert atmosphere;	A 8% B 89%

Diphenylphosphine oxide (4559-70-0) + mesitylene-2-carboxylic acid chloride (938-18-1) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With dmap at 80℃;	88.2%
With Methyltrichlorosilane; triethylamine In 1,4-dioxane at 60℃; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Schlenk technique; Inert atmosphere; Green chemistry;	71%
Stage #1: mesitylene-2-carboxylic acid chloride With aluminum (III) chloride In 1,2-dichloro-ethane at 20℃; for 1h; Inert atmosphere; Stage #2: Diphenylphosphine oxide In 1,2-dichloro-ethane for 5h; Reflux;	1.6 g

C22H21Cl2P → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With dihydrogen peroxide In toluene	84%

tetrachloromethane (56-23-5) + Diphenylphosphine oxide (4559-70-0) + 1,3,5-trimethyl-benzene (108-67-8) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: tetrachloromethane; 1,3,5-trimethyl-benzene With aluminum (III) chloride at 40℃; for 3.25h; Inert atmosphere; Stage #2: With hydrogenchloride; water at 20℃; for 0.5h; Inert atmosphere; Stage #3: Diphenylphosphine oxide In toluene Reagent/catalyst; Inert atmosphere;	84%

diphenylphosphinous acid methyl ester (4020-99-9) + 2,2,2-trichloro-1-(2,4,6-trimethylphenyl)ethan-1-one (81759-79-7) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
In toluene at 40 - 60℃;	82%

Ethyl diphenylphosphinite (719-80-2) + 2,2,2-trichloro-1-(2,4,6-trimethylphenyl)ethan-1-one (81759-79-7) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
In toluene at 40 - 60℃;	81%

tetrachloromethane (56-23-5) + chloro-diphenylphosphine (1079-66-9) + 1,3,5-trimethyl-benzene (108-67-8) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: tetrachloromethane; 1,3,5-trimethyl-benzene With aluminum (III) chloride at 40℃; for 3.25h; Inert atmosphere; Stage #2: With hydrogenchloride; water at 20℃; for 0.5h; Inert atmosphere; Stage #3: chloro-diphenylphosphine Further stages;	81%

mesytaldehyde (487-68-3) + benzene (71-43-2) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Stage #1: benzene With aluminum (III) chloride; phosphorus trichloride at 70 - 120℃; Stage #2: mesytaldehyde at 5 - 10℃; Stage #3: With tungsten trioxide; tetrabutylammomium bromide; dihydrogen peroxide; sodium hydroxide at 5 - 10℃; pH=2;	80%

1,3,5-trimethyl-benzene (108-67-8) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminum (III) chloride; hydrogenchloride / 2 h / 20 °C 2: magnesium / tetrahydrofuran / Reflux View Scheme
Multi-step reaction with 2 steps 1.1: aluminum (III) chloride / 3 h / 20 - 45 °C 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / Cooling with ice 2.2: 0.5 h View Scheme
Multi-step reaction with 3 steps 1.1: aluminum (III) chloride / 3 h / 20 - 45 °C 2.1: lithium / tetrahydrofuran / 35 °C / Inert atmosphere 2.2: 20 °C 3.1: dihydrogen peroxide / toluene View Scheme
Multi-step reaction with 2 steps 1.1: C8H15N2(1+)*Br(1-)*2AlCl3; titanium tetrachloride; 1-methylimidazole hydrogen sulfate / 20 °C / 22502.3 - 30003 Torr / Autoclave 2.1: water; chlorobenzene / 2 h / 5 - 20 °C 2.2: 20 h / 5 °C / pH 3 View Scheme

(trichloromethyl)mesitylene (707-74-4) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1.1: lithium / tetrahydrofuran / 35 °C / Inert atmosphere 1.2: 20 °C 2.1: dihydrogen peroxide / toluene View Scheme

2,4,6-trimethylbenzyl alcohol (4170-90-5) + Diphenylphosphine oxide (4559-70-0) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1: dipotassium peroxodisulfate / acetone / 20 °C 2: manganese(IV) oxide / dichloromethane / 20 °C View Scheme

mesitylene-2-carboxylic acid chloride (938-18-1) + diphenyl(methyl)phosphine oxide (2129-89-7) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
In toluene at 0 - 80℃; for 3h; Inert atmosphere;
In toluene at 0 - 80℃; for 3h; Inert atmosphere;

benzene (71-43-2) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminum (III) chloride; trichlorophosphate / 4 h / 70 °C / Inert atmosphere 2: dmap / 80 °C View Scheme
Multi-step reaction with 2 steps 1.1: aluminum (III) chloride; trichlorophosphate / 70 - 120 °C 1.2: 0.5 h / 30 °C 2.1: toluene / 40 - 60 °C View Scheme
Multi-step reaction with 2 steps 1.1: aluminum (III) chloride; trichlorophosphate / 70 - 130 °C 1.2: 0.5 h / 30 °C 2.1: toluene / 40 - 60 °C View Scheme

diphenylphosphanyl(2,4,6-trimethylphenyl)methanone → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
With dihydrogen peroxide In diethyl ether at 30 - 45℃; for 2h; Inert atmosphere;	59.3g
With tert.-butylhydroperoxide; vanadia In chlorobenzene at 30℃; under 1500.15 Torr; for 0.00138889h; Temperature; Reagent/catalyst;
With 3-chloro-benzenecarboperoxoic acid In tetrahydrofuran at 25℃; for 3h; Inert atmosphere;

chloro-diphenylphosphine (1079-66-9) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1: 1-methyl-1H-imidazole / 2 h / 35 - 60 °C 2: 7.33 h / 50 - 90 °C View Scheme
Multi-step reaction with 2 steps 1: 1-methyl-1H-imidazole / 2 h / 45 - 65 °C 2: 9.33 h / 50 - 90 °C View Scheme
Multi-step reaction with 2 steps 1: 1-methyl-1H-imidazole / 2 h / 50 - 100 °C 2: 7.33 h / 50 - 90 °C View Scheme
Multi-step reaction with 2 steps 1: 1-methyl-1H-imidazole / 2 h / 50 - 65 °C 2: 7.33 h / 50 - 90 °C View Scheme
Multi-step reaction with 2 steps 1: 1-methyl-1H-imidazole / 3 h / 50 - 80 °C 2: 9.33 h / 50 - 90 °C View Scheme

mesytaldehyde (487-68-3) + chloro-diphenylphosphine (1079-66-9) → (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8)

Conditions	Yield
Multi-step reaction with 2 steps 1: chlorobenzene / 0 h / 30 °C / 1500.15 Torr 2: vanadia; tert.-butylhydroperoxide / chlorobenzene / 0 h / 30 °C / 1500.15 Torr View Scheme
Stage #1: mesytaldehyde; chloro-diphenylphosphine In water; chlorobenzene at 5 - 20℃; for 2h; Stage #2: With ammonium molibdate; tetrabutylammomium bromide; dihydrogen peroxide; sodium hydroxide In water; chlorobenzene at 5℃; for 20h; pH=3;

(2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) + 2-chloropropionyl chloride (625-36-5) → C25H24ClO3P

Conditions	Yield
With aluminum (III) chloride In dichloromethane at 10 - 35℃; for 7h;	99%

1-iodoperfluorododecane (307-60-8) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → pentacosafluorododecyldiphenylphosphine (1424373-37-4)

Conditions	Yield
With Diphenylphosphine oxide at 20℃; for 6h; Inert atmosphere; Irradiation;	98%

(2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → diphenyl(2,4,6-trimethylphenyl)phosphine oxide (91239-43-9)

Conditions	Yield
With tris-(dibenzylideneacetone)dipalladium(0); tricyclohexylphosphine In 5,5-dimethyl-1,3-cyclohexadiene at 130℃; for 16h; Schlenk technique; Inert atmosphere;	97%

1-Iodo-perfluorodecane (423-62-1) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → henicosafluorodecyldiphenylphosphine

Conditions	Yield
With Diphenylphosphine oxide at 20℃; for 1.5h; Wavelength; Reagent/catalyst; Time; Inert atmosphere; Irradiation;	96%
With diphenylphosphane at 20℃; for 3.5h; Wavelength; Irradiation; Inert atmosphere; Sealed tube;	81 %Spectr.
In chloroform-d1 at 15 - 25℃; for 3.5h; Solvent; Irradiation; Sealed tube;	41 %Spectr.

dodecafluoro-1,6-diiodohexane (375-80-4) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → 1,6-bis(diphenylthiophosphinyl)perfluorohexane (1424373-26-1)

Conditions	Yield
Stage #1: dodecafluoro-1,6-diiodohexane; (2,4,6-trimethylbenzoyl)diphenylphosphine oxide With Diphenylphosphine oxide at 20℃; for 6h; Inert atmosphere; Irradiation; Stage #2: With sulfur at 80℃; for 5h; Inert atmosphere;	96%

4,4'-dimethoxyphenyl disulfide (5335-87-5) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → S-(4-methoxyphenyl) 2,4,6-trimethylthiobenzoate + S-(4-methoxyphenyl)thiodiphenylphosphorus oxide (99234-85-2)

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 87% B 96%

(2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) + diphenyldisulfane (882-33-7) → S-phenyl 2,4,6-trimethylthiobenzoate (50404-53-0) + diphenylthiophosphinic acid-S-phenyl ester (5510-78-1)

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 78% B 95%

1-Iodo-perfluorodecane (423-62-1) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) + diphenylphosphane (829-85-6) → henicosafluorodecyldiphenylphosphine

Conditions	Yield
at 20℃; for 1.5h; Irradiation;	95%
In chloroform-d1 at 15 - 25℃; for 1.5h; Irradiation; Sealed tube;	88%

di(p-tolyl) disulfide (103-19-5) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → S-(4-methylphenyl)thiodiphenylphosphorus oxide (5510-81-6) + S-(4-methylphenyl) 2,4,6-trimethylthiobenzoate

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 94% B 94%

bis(p-chlorophenyl) diselenide (20541-49-5) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → Se-(4-chlorophenyl) 2,4,6-trimethylselenobenzoate + Se-(4-chlorophenyl) diphenylselenophosphinate

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 94% B 92%

dibutyl diselenide (20333-40-8) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → P,P-diphenylphosphinoselenoic acid Se-butyl ester + Se-(n-butyl) 2,4,6-trimethylselenobenzoate

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 91% B 94%

diphenyl diselenide (1666-13-3) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → Se-phenyl diphenylselenophosphinate (2049-62-9) + Se-phenyl 2,4,6-trimethylselenobenzoate

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 92% B 88%

(2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) + chloroacetyl chloride (79-04-9) → C24H22ClO3P

Conditions	Yield
With aluminum (III) chloride In dichloromethane at 10 - 35℃; for 7h;	92%

dibenzyl disulphide (150-60-7) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) → diphenylphosphinothioic acid S-benzyl ester (3096-05-7) + C17H18OS

Conditions	Yield
In dichloromethane at 20℃; for 6h; Inert atmosphere; Sealed tube; Irradiation;	A 91% B 40 %Spectr.

1-Iodo-perfluorodecane (423-62-1) + (2,4,6-trimethylbenzoyl)diphenylphosphine oxide (75980-60-8) + Diphenylphosphine oxide (4559-70-0) → henicosafluorodecyldiphenylphosphine

Conditions	Yield
at 20℃; for 1.5h; Irradiation;	90%
In chloroform-d1 at 15 - 25℃; for 1.5h; Irradiation;	90%

Upstream product

• 719-80-2 Ethyl diphenylphosphinite 
• 938-18-1 mesitylene-2-carboxylic acid chloride 
• 64-17-5 ethanol 
• 1079-66-9 chloro-diphenylphosphine 
• 487-68-3 mesytaldehyde 
• 4559-70-0 Diphenylphosphine oxide 
• 4170-90-5 2,4,6-trimethylbenzyl alcohol 
• 707-74-4 (trichloromethyl)mesitylene 
• 108-67-8 1,3,5-trimethyl-benzene 
• 644-97-3 Dichlorophenylphosphine 
• 829-85-6 diphenylphosphane 
• 1499-21-4 Diphenylphosphinic chloride 
• 824-72-6 P,P-dichlorophenylphosphine oxide 
• 108-90-7 chlorobenzene 

Downstream Products

• 4746-81-0 mesitil 
• 1054-59-7 1,1,2,2-tetraphenyldiphosphane-1,2-dioxide 
• 178817-23-7 diphenylphosphinic-diphenylphosphinous anhydride 
• 72666-10-5 diphenyl<(2,4,6-trimethylbenzoyl)oxy>phosphine 
• 4559-70-0 Diphenylphosphine oxide 
• 50404-53-0 S-phenyl 2,4,6-trimethylthiobenzoate 
• 5510-78-1 diphenylthiophosphinic acid-S-phenyl ester 
• 2049-62-9 Se-phenyl diphenylselenophosphinate 
• 1754-55-8 ethyl 2,4,6-trimethylbenzoate 
• 3096-05-7 diphenylphosphinothioic acid S-benzyl ester 
• 5510-81-6 S-(4-methylphenyl)thiodiphenylphosphorus oxide 
• 21081-94-7 diphenylthiophosphinic acid-S-4-chlorophenyl ester 
• 99234-85-2 S-(4-methoxyphenyl)thiodiphenylphosphorus oxide 

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The invention relates to the field of photocuring functional new material chemicals, discloses co-production preparation of a series of monoacylphosphine and diacylphosphine, and oxides thereof, namely monoacylphosphine oxide and diacylphosphine oxide for the first time, wherein one-pot preparation of the compounds in the same flow process and the same reactor is achieved for the first time. The process technology has the characteristics of outstanding low-cost economic competitiveness and environmental friendliness. The compounds are important olefinic bond (C=C)-containing unsaturated photoinitiator for a radiation polymerization system.

High performance liquid phase continuous automatic production and co-production technology of organic phosphine compound

The invention relates to the field of photocuring functional new material chemicals, and discloses a high performance liquid phase streamline type continuous automatic production technology of an acylphosphine oxide organic phosphine compound for the first time, which not only can produce a single specific target product, but also can co-produce a product mixture of two or more than two of the products of the type. The process technology has outstanding low-cost economic competitiveness and environment-friendly characteristics for large-scale manufacturing of target products. The target product comprises sym-trimethylbenzoyl diphenyl phosphine oxide (also known as 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide, trade name TPO), sym-trimethylbenzoyl phenyl ethyl phosphonate (trade name TPO-L) and structural analogues thereof, and a mixture of the sym-trimethylbenzoyl diphenyl phosphine oxide and the sym-trimethylbenzoyl phenyl ethyl phosphonate. The organic phosphine compound is an olefinic bond-containing (C=C) unsaturated radiation polymerization system photoinitiator and/or flame retardant and the like with wide application.

Preparation method of methyl substituted benzaldehyde

The invention relates to a preparation method of methyl substituted benzaldehyde, in particular to a method for preparing alkyl aromatic aldehyde through a carbonylation reaction by adopting methyl substituted aromatic hydrocarbon as raw materials. According to the method, ionic liquid with the high catalytic activity is adopted, and methyl substituted benzene is used for preparing the methyl substituted benzaldehyde under the alleviated condition with high conversion rate; meanwhile, the reaction time is shortened, waste water, gas and industrial residues are reduced, and no auxiliaries withhigh corrosivity are adopted.

Method for catalytically synthesizing benzoyl phosphine oxide compound

The invention discloses a method for catalytically synthesizing a benzoyl phosphine oxide compound, and belongs to the technical field of chemical engineering. According to the method, trimethylchlorosilane is taken as a catalyst, a halogen-containing compound is taken as a cocatalyst, reaction of a phosphine oxide compound and 2, 4, 6-trimethylbenzoyl chloride is realized in a proper solvent at a certain temperature, and the benzoyl phosphine oxide compound (represented by 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide (TPO for short) is prepared with high selectivity. The process has the characteristics of mild reaction conditions and high quality of the prepared product. The method does not involve a violent oxidation process, does not generate toxic waste gas, is simple and convenient to operate in the whole process, is environment-friendly and is particularly suitable for industrial mass production.

Conversion of α‐hydroxy(2,4,6‐trimethylbenzyl)diphenylphosphine oxide to TPO: oxidation vs decomposition

This study details the oxidation of α-hydroxy(2,4,6-trimethylbenzyl)diphenylphosphine oxide (α-HDPO) to diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) by choosing the proper MnO2 as oxidant. In addition, the equilibrium of α-HDPO and 2,4

Condensation of s-trimethyltrihalomethyl benzene and diphenylphosphine oxide for preparation of organic phosphine compound

The invention relates to the field of photocuring functional new material chemicals. A 'one-pot' direct condensation reaction between s-trimethyltrihalomethyl benzene (also known as '2, 4, 6-trimethyl-1-trihalomethyl-benzene') and diphenylphosphine oxide is disclosed for the first time, and s-trimethylbenzoyl diphenyl phosphine oxide (also known as '2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide') is efficiently prepared by using the reaction process technology. The process technology has the characteristics of outstanding low-cost economic competitiveness and environmental friendliness. The compound is an olefinic bond (C = C)-containing unsaturated radiation polymerizable system photoinitiator with wide application.

Chlorosilane-Catalyzed Coupling of Hydrogen Phosphine Oxides with Acyl Chlorides Generating Acylphosphine Oxides

We report a new method for the synthesis of acylphosphine oxides by the direct coupling of hydrogen phosphine oxides and acyl chlorides mediated by chlorosilanes. This new protocol is greener and safer, because it precludes the generation of volatile haloalkanes and the use of oxidants employed in the conventional methods. Moreover, moisture-unstable acylphosphine oxides that are difficult to prepare via the conventional methods can be generated using this new method.