CAS No.111991-20-9,2-(2,4,5-trifluorophenyl)acetaldehyde Suppliers

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Hangzhou Dingyan Chem Co., Ltd

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Nanjing Raymon Biotech Co., Ltd.

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Synthetic route

: 883267-70-7
2-(2,4,5-trifluorophenyl)ethanol

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
With manganese(IV) oxide In toluene for 8h; Reagent/catalyst; Solvent; Reflux;	75%

: 1,2,4-trifluoro-5-(2-methoxyethenyl)benzene

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
With hydrogenchloride In 1,4-dioxane at 20℃; for 6h;
With hydrogenchloride In tetrahydrofuran; water at 0 - 30℃; for 2h;	2 g
With hydrogenchloride In 1,4-dioxane at 20℃; for 6h;

: 165047-24-5
2,4,5-trifluorobenzaldehyde

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: sodium hydride / tetrahydrofuran / 1 h / 0 - 20 °C 1.2: 48 h / 20 °C 2.1: hydrogenchloride / tetrahydrofuran; water / 2 h / 0 - 30 °C View Scheme

: 209995-38-0
(2,4,5-trifluorophenyl)acetic acid

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: sulfuric acid / methanol / 3 h / Heating 1.2: 20 °C / Cooling with ice 2.1: manganese(IV) oxide / toluene / 8 h / Reflux View Scheme
Multi-step reaction with 2 steps 1.1: sulfuric acid / 3 h / Reflux 2.1: sodium tetrahydroborate / tetrahydrofuran / 1 h 2.2: 5 h View Scheme

: 1036273-20-7
2,4,5-trifluorophenylacetic acid methyl ester

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
Stage #1: 2,4,5-trifluorophenylacetic acid methyl ester With sodium tetrahydroborate In tetrahydrofuran for 1h; Stage #2: With pyridinium chlorochromate In dichloromethane for 5h;

: 1-chloro-2-(2,4,5-trifluorophenyl)ethyl acetate

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
With hydrogenchloride; Aliquat 336 In water; acetone at 25 - 30℃; for 24h; Reagent/catalyst;

: 367-34-0
2,4,5-trifluoroaniline

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: hydrogenchloride / water / 1 h 1.2: 0 °C 1.3: 0 °C 2.1: Aliquat 336; hydrogenchloride / water; acetone / 24 h / 25 - 30 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 196929-78-9
(R)-2-methylpropane-2-sulfinamide

: (R,E)-2-methyl-N-[2-(2,4,5-trifluorophenyl)ethylidene]propane-2-sulfinamide

Conditions

Conditions	Yield
With pyridinium p-toluenesulfonate; sodium sulfate In dichloromethane at 20℃; for 16h;	96%

: 141-82-2
malonic acid

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: C10H7F3O2

Conditions

Conditions	Yield
With piperidine In toluene Temperature; Solvent; Reagent/catalyst; Knoevenagel Condensation; Reflux;	94.3%

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 3182-95-4
L-Phenylalaninol

: 24850-33-7
allyltributylstanane

: C20H22F3NO

Conditions

Conditions	Yield
Stage #1: 2-(2,4,5-trifluorophenyl)acetaldehyde; L-Phenylalaninol With magnesium(I) iodide In dichloromethane at 20℃; for 0.166667h; Inert atmosphere; Stage #2: allyltributylstanane In dichloromethane at 20℃; Reagent/catalyst; Solvent; Inert atmosphere;	82%

...Expand

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 209995-38-0
(2,4,5-trifluorophenyl)acetic acid

Conditions

Conditions	Yield
With sodium chlorite; water at 0 - 5℃; for 6h; Reagent/catalyst;	80%

: 27784-76-5
tert-butyl diethylphosphonoacetate

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1380521-84-5
tert-butyl (E)-4-(2',4',5'-trifluorophenyl)but-2-enoate

Conditions

Conditions	Yield
Stage #1: tert-butyl diethylphosphonoacetate With methylmagnesium bromide In tetrahydrofuran; diethyl ether for 0.25h; Stage #2: 2-(2,4,5-trifluorophenyl)acetaldehyde In tetrahydrofuran; diethyl ether for 15h; Wadsworth-Emmons reaction; Reflux; optical yield given as %de; diastereoselective reaction;	74%

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 146374-27-8
S-tert-butylsulfinimide

: 2-methylpropane-2-sulfinic acid [2-(2,4,5-trifluorophenyl)-eth-(Z)-ylidene]amide

Conditions

Conditions	Yield
toluene-4-sulfonic acid In toluene Reflux;

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: sitagliptin phosphate

Conditions

Conditions	Yield
Multi-step reaction with 6 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C 5.1: 30% w/w Pd(OH)2/C; hydrogen / methanol / 24 h / 3800.26 Torr 6.1: phosphoric acid / ethanol / 0.5 h / 80 °C View Scheme
Multi-step reaction with 6 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C 5.1: 20 wt.% Pd(OH)2 on activated carbon; hydrogen / methanol / 24 h / 3800.26 Torr 6.1: phosphoric acid / ethanol / 0.5 h / 80 °C View Scheme
Multi-step reaction with 5 steps 1.1: tetrahydrofuran / 12 h / Reflux 2.1: n-butyllithium / tetrahydrofuran; hexane / 0.5 h / -20 °C 2.2: 2 h / -20 °C 3.1: hydrogenchloride / water / 12 h / Reflux 3.2: 0.5 h / Cooling with ice 3.3: 20 °C 4.1: hydrogen; 5%-palladium/activated carbon; acetic acid / methanol / 48 h / 50 °C / 19001.3 Torr 5.1: phosphoric acid / ethanol / 0.5 h / Reflux View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1380521-85-6
tert-butyl (R,R)-3-[N-benzyl-N-(α-methylbenzyl)amino]-4-(2',4',5'-trifluorophenyl)butanoate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1380521-86-7
tert-butyl (R,R)-3-[N-benzyl-N-(α-methyl-p-methoxybenzyl)amino]-4-(2',4',5'-trifluorophenyl)butanoate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1380521-87-8
C25H24F3NO2*ClH

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1380521-88-9
(R,R)-N-benzyl-N-(α-methylbenzyl)-1-(2',4',5'-trifluorophenyl)-4-oxo-4-{3''-(trifluoromethyl)-5'',6''-dihydro-1'',2'',4''-triazolo[4,3-α]pyrazin-7''(8''H)-yl}butan-2-amine

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C View Scheme
Multi-step reaction with 3 steps 1.1: tetrahydrofuran / 12 h / Reflux 2.1: n-butyllithium / tetrahydrofuran; hexane / 0.5 h / -20 °C 2.2: 2 h / -20 °C 3.1: hydrogenchloride / water / 12 h / Reflux 3.2: 0.5 h / Cooling with ice 3.3: 20 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: C26H26F3NO3*ClH

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1393363-87-5
(R)-N-benzyl-1-(2',4',5'-trifluorophenyl)-4-oxo-4-{3''-(trifluoromethyl)-5'',6''-dihydro-1'',2'',4''-triazolo[4,3-α]pyrazin-7''(8''H)-yl}butan-2-amine

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 486460-32-6
sitagliptin

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C 5.1: 30% w/w Pd(OH)2/C; hydrogen / methanol / 24 h / 3800.26 Torr View Scheme
Multi-step reaction with 5 steps 1.1: methylmagnesium bromide / tetrahydrofuran; diethyl ether / 0.25 h 1.2: 15 h / Reflux 2.1: n-butyllithium / tetrahydrofuran / 0.5 h / -78 °C 2.2: 2 h / -78 °C 3.1: hydrogenchloride / water / 6 h / Reflux 4.1: benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / chloroform / 16 h / 20 °C 5.1: 20 wt.% Pd(OH)2 on activated carbon; hydrogen / methanol / 24 h / 3800.26 Torr View Scheme
Multi-step reaction with 6 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 7 h / 0 °C 3: palladium diacetate; triphenylphosphine; triethylamine; formic acid / ethyl acetate / 3 h / Reflux 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C 5: triethylamine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / dichloromethane / 0 - 20 °C 6: hydrogenchloride; water / methanol / 4 h / 20 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: diethyl 2-{(R)-1-[((R)-tert-butylsulfinyl)amino]-2-(2,4,5-trifluorophenyl)ethyl}malonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

A: diethyl 2-{(R)-1-[((R)-tert-butylsulfinyl)amino]-2-(2,4,5-trifluorophenyl)ethyl}malonate

B: C19H26F3NO5S

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: potassium carbonate; 18-crown-6 ether / neat (no solvent) / 1 h / 0 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: ethyl (R)-3-[((R)-tert-butylsulfinyl)amino]-4-(2,4,5-trifluorophenyl)butanoate

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: potassium carbonate; 18-crown-6 ether / neat (no solvent) / 1 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C View Scheme
Multi-step reaction with 3 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C View Scheme
Multi-step reaction with 3 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 7 h / 0 °C 3: palladium diacetate; triphenylphosphine; triethylamine; formic acid / ethyl acetate / 3 h / Reflux View Scheme
Multi-step reaction with 2 steps 1.1: magnesium sulfate; pyridinium p-toluenesulfonate / dichloromethane / 24 h / Reflux 2.1: chloro-trimethyl-silane; zinc; copper(l) chloride / tetrahydrofuran / 0.33 h / 50 °C 2.2: 2.33 h / -5 - 60 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1-allyl-3-methyl {(R)-1-[((R)-tert-butylsulfinyl)amino]-2-(2,4,5-trifluorophenyl)ethyl}malonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1-allyl-3-ethyl {(R)-1-[((R)-tert-butylsulfinyl)amino]-2-(2,4,5-trifluorophenyl)ethyl}malonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 7 h / 0 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: diallyl {(R)-1-[((R)-tert-butylsulfinyl)amino]-2-(2,4,5-trifluorophenyl)ethyl}malonate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: (R)-3-[((R)-tert-butylsulfinyl)amino]-4-(2,4,5-trifluorophenyl)butanoic acid

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: potassium carbonate; 18-crown-6 ether / neat (no solvent) / 1 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C View Scheme
Multi-step reaction with 4 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C View Scheme
Multi-step reaction with 4 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 7 h / 0 °C 3: palladium diacetate; triphenylphosphine; triethylamine; formic acid / ethyl acetate / 3 h / Reflux 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C View Scheme
Multi-step reaction with 3 steps 1.1: magnesium sulfate; pyridinium p-toluenesulfonate / dichloromethane / 24 h / Reflux 2.1: chloro-trimethyl-silane; zinc; copper(l) chloride / tetrahydrofuran / 0.33 h / 50 °C 2.2: 2.33 h / -5 - 60 °C 3.1: lithium hydroxide / water; methanol / 2 h / 0 - 20 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 1349649-83-7
(R)-2-methyl-N-((R)-4-oxo-4-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-1-(2,4,5-trifluorophenyl)butan-2-yl)propane-2-sulfinamide

Conditions

Conditions	Yield
Multi-step reaction with 5 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 7 h / 0 °C 3: palladium diacetate; triphenylphosphine; triethylamine; formic acid / ethyl acetate / 3 h / Reflux 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C 5: triethylamine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / dichloromethane / 0 - 20 °C View Scheme
Multi-step reaction with 5 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: potassium carbonate; 18-crown-6 ether / neat (no solvent) / 1 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C 5: triethylamine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / dichloromethane / 0 - 20 °C View Scheme
Multi-step reaction with 5 steps 1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2: sodium iodide; potassium carbonate / neat (no solvent) / 4 h / 0 °C 3: hydrogenchloride / methanol; water / 20 °C 4: sodium hydroxide; water / tetrahydrofuran / 2 h / 40 °C 5: triethylamine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / dichloromethane / 0 - 20 °C View Scheme
Multi-step reaction with 4 steps 1.1: magnesium sulfate; pyridinium p-toluenesulfonate / dichloromethane / 24 h / Reflux 2.1: chloro-trimethyl-silane; zinc; copper(l) chloride / tetrahydrofuran / 0.33 h / 50 °C 2.2: 2.33 h / -5 - 60 °C 3.1: lithium hydroxide / water; methanol / 2 h / 0 - 20 °C 4.1: N-ethyl-N,N-diisopropylamine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane / 0.17 h / 0 - 20 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: tert-butyl (R)-3-[((R)-tert-butylsulfinyl)amino]-4-(2,4,5-trifluorophenyl)butanoate

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: pyridinium p-toluenesulfonate; sodium sulfate / dichloromethane / 16 h / 20 °C 2.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -78 °C 2.2: 3 h / -78 °C View Scheme

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: 196929-78-9
(R)-2-methylpropane-2-sulfinamide

: (R)-2-methyl-N-(2-(2,4,5-trifluorophenyl)ethylidene)propane-2-sulfinamide

Conditions

Conditions	Yield
With pyridinium p-toluenesulfonate; magnesium sulfate In dichloromethane for 24h; Reflux;	15.5 g

: 111991-20-9
2-(2,4,5-trifluorophenyl)acetaldehyde

: C27H28F3NO2

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: tetrahydrofuran / 12 h / Reflux 2.1: n-butyllithium / tetrahydrofuran; hexane / 0.5 h / -20 °C 2.2: 2 h / -20 °C View Scheme

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