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Name	2,3,5-Trichloropyridine	EINECS	407-270-2
CAS No.	16063-70-0	Density	1.539 g/cm³
PSA	12.89000	LogP	3.04180
Solubility	Slightly soluble in water.	Melting Point	46-50 °C(lit.)
Formula	C₅H₂Cl₃N	Boiling Point	215.7 °C at 760 mmHg
Molecular Weight	182.437	Flash Point	104.7 °C
Transport Information	UN 2811 6.1/PG 3	Appearance	Beige powder
Safety	61-37/39-26	Risk Codes	52/53-36/37/38
Molecular Structure		Hazard Symbols	Xi
Synonyms	2,3,5-trichloropyridine intermediate;5-20-05-00420 (Beilstein Handbook Reference);Pyridine, 2,3,5-trichloro-;	Article Data	36

2,3,5-Trichloropyridine Synthetic route

: 2402-79-1
2,3,5,6-tetrachloropyridine

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With 5%-palladium/activated carbon; hydrogen; potassium hydroxide In 5,5-dimethyl-1,3-cyclohexadiene; water at 60℃; under 4500.45 Torr; for 6h; Reagent/catalyst; Solvent; Pressure; Autoclave;	99.1%
With sodium hydroxide In benzene

: 2176-62-7
2,3,4,5,6-pentachloropyridine

A: 6515-09-9
2,3,6-trichloropyridine

B: 16063-70-0
2,3,5-trichloropyridine

C: 2402-79-1
2,3,5,6-tetrachloropyridine

Conditions

Conditions	Yield
With ammonium chloride; dimethyl methane phosphonate; zinc In water at 85 - 90℃; Product distribution; other ammonium salts; other methylphosphonates/phosphates;	A 0.9% B 1% C 97.6%

: 2808-86-8
2,3,4,5-tetrachloro-pyridine

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With tetramethylammonium methylphosphonic acid methyl ester; dimethyl methane phosphonate; zinc In water at 85℃; other ammonium salts; other methylphosphonates;other solvent(s). Object of study: selectivity of reaction;	96.4%
With ammonium chloride; zinc In methanol; water at 72℃; for 2h; Solvent; Temperature;	90%
With pyridine; 5%-palladium/activated carbon; hydrogen In methanol; water at 50℃; under 3750.38 Torr; Reagent/catalyst; Temperature; Pressure;	86.2%
With tetramethylammonium methylphosphonic acid methyl ester; dimethyl methane phosphonate; zinc In water at 85℃; for 1h; Yield given;
With ammonium chloride; zinc In methanol; water at 70 - 80℃; Temperature; Solvent; Large scale;	1.4 kg

: 55933-94-3
3,5,6-trichloro-2-hydrazinopyridine

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
	95%
With sodium hypochlorite; sodium hydroxide In water at 70 - 75℃; for 1h; Green chemistry;	95%
	93%

: 75272-53-6
2,4,4-trichloro-4-formylbutyronitrile

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With hydrogenchloride; phosphorus pentachloride In N,N-dimethyl-formamide at 60 - 100℃; for 1h;	89%
With hydrogenchloride at 180℃; for 2h;	85%
With hydrogenchloride at 80℃; for 3h;	82.1%

: 5437-33-2
3,5-Dichloro-2-pyridinol

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With trichlorophosphate at 190℃; for 3h; in sealed tube;	87%

: 98775-57-6
2,2,4'-trichloro-5-oxopentanonitrile

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With hydrogenchloride; trichlorophosphate In N,N-dimethyl-formamide at 115℃; for 0.333333h;	79%
With trichlorophosphate In benzene at 190℃; for 1h; in autoclave;	76%
Multi-step reaction with 2 steps 1: 91 percent / dry HCl / dimethylformamide / 0.25 h / 110 °C 2: 87 percent / POCl3 / 3 h / 190 °C / in sealed tube View Scheme
Multi-step reaction with 3 steps 1: 90 percent / dry HCl / dibutyl ether / 1 h / 90 °C 2: 95 percent / triethylamine / benzene / 4 h / Heating 3: 87 percent / POCl3 / 3 h / 190 °C / in sealed tube View Scheme

: 2176-62-7
2,3,4,5,6-pentachloropyridine

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With tetrabutylammomium bromide; sodium hydroxide; zinc In toluene at 50℃; for 6h; Green chemistry;	73%
With ammonium hydroxide In toluene
With sodium hydroxide; zinc In benzene
With sodium hypochlorite; sodium hydrogencarbonate; hydrazine In propylene glycol dimethyl ether; water

: 75-87-6
chloral

: 107-13-1
acrylonitrile

: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
copper(l) chloride In acetonitrile at 190℃; for 0.5h;	65%
copper(l) chloride In acetonitrile at 190℃; for 0.5h;	65%
With [bmim]BF4; copper(l) chloride In acetonitrile at 120℃;	41%
In acetonitrile at 105 - 190℃; Product distribution; various inorg. catalyst, various yield;
copper(l) chloride In acetonitrile at 120 - 175℃; for 19h;

Pyridin-Palladium(II)-chlorid-Komplex: Pyridin-Palladium(II)-chlorid-Komplex

A: 109-09-1
2-chloropyridine

B: 2402-77-9
2,3-dichloro-pyridine

C: 16063-70-0
2,3,5-trichloropyridine

Conditions

Conditions	Yield
With chlorine In cyclohexane at 75℃; for 1h;	A 9% B 62% C 4.5%

2,3,5-Trichloropyridine Chemical Properties

Synonyms: 2,3,5-trichloro-pyridin;2,3,5-TRICHLOROPYRIDINE;Trichloropyridine,98%;2,3,5-TRICHLOROPYRIDINE 98+%;3,5,6-Trichloropyridine
MF: C₅H₂C_l3N
MW: 182.44
EINECS: 407-270-2
MP: 46-50 °C
BP: 219 °C
FP: >230 °C
CAS DataBase Reference: 16063-70-0
Structural Formula:

2,3,5-Trichloropyridine Toxicity Data With Reference

Hazard Codes :

Xi
Risk Statements :
R52/53: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
R36/37/38: Irritating to eyes, respiratory system and skin

2,3,5-Trichloropyridine Safety Profile

Safety Statements :
S61: Avoid release to the environment. Refer to special instructions safety data sheet
S37/39: Wear suitable gloves and eye/face protection
S26: In case of contact with eyes, rinse immediately with plenty of WATER and seek medical advice

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