866633-26-3|(5-Fluoro-2-(trifluoromethoxy)phenyl)boronic acid| Ambeed

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CAS No. :	866633-26-3
Formula :	C₇H₅BF₄O₃
M.W :	223.92
SMILES Code :	OB(C1=CC(F)=CC=C1OC(F)(F)F)O
MDL No. :	MFCD22418268

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302-H315-H319
Precautionary Statements:	P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Yield	Reaction Conditions	Operation in experiment
		To a solution of the aryl bromide (from Step 2 above) (5g) in THF (25 mL) was added Isopropylmagnesium chloride (15 mL, 2.0M in THF) at room temperature. After stirring at the ambient for 2 h, B (OiPr)3 added to the reaction and stirred overnight. The reaction was quenched with IN HCl, stirred at room temperature for 30min and extracted with EtOAc. The residue obtained after removal of the solvent in vacuo, was dissolved in 10% KOH, extracted with ether. The aqueous phase was acidified with concentrated HCl and extracted with EtOAc. The organic layer was dried over Na2SO4 and concentrated to give the aryl boronic acid as a white solid. ¹H NMR (CDCl3) : 7.28-7.32 (m, 1H), 7.17-7.22 (m, 2H) MS (ESI): m/e 225 (M+1)+
		A solution of isopropylmagnesium bromide (2M solution in tetrahydrofuran) (83 ml, 0.166 mol) was added drop-wise to a stirred solution of 2-(trifluoromethoxy)-5-fluoro- 1 -bromobenzene (Preparation 49, 27.6 g, 0.107 mol) in anhydrous tetrahydrofuran (125 ml) at -1O0C under an atmosphere of nitrogen. The resulting mixture was stirred at room temperature for 2 hours. Tri/sopropyl borate (26.1 g, 0.139 mol) was then added drop-wise at -100C and the resulting mixture was stirred at room temperature for 16 hours. Hydrochloric acid (1 N aqueous solution) (100 ml) was added drop-wise at O0C and the mixture stirred at room temperature for 30 minutes. Ethyl acetate (150 ml) was added and the layers were separated, the aqueous layer was further extracted with ethyl acetate (2 x 150 ml). The organic extracts were combined and concentrated in vacuo. The residue was dissolved in potassium hydroxide (10% aqueous solution) (50 ml) and extracted with diethyl ether (2 x 150 ml). The separated aqueous layer was acidified to pH~4 by addition of hydrochloric acid (1 N aqueous solution) (100 ml) and extracted with ethyl acetate (3 x 150 ml). The combined organic extracts were dried over anhydrous Na2SO4, filtered and evaporated in vacuo to give an off white solid. Purification by preparative HPLC gave the title compound as an off white solid (5.82 g, 24%).1HNMR (cfe-DMSO): 7.23-7.32 (m, 3H), 7.53-7.55 (m, 1 H), 8.36 (br s, 1 H).MS m/z 223 [MH]-

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P333 + P313	IF SKIN irritation or rash occurs: Get medical advice/attention.
P335 + P334	Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.
P337 + P313	IF eye irritation persists: Get medical advice/attention.
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P370 + P378	In case of fire:
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P411 + P235	Keep cool.
Disposal
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P501	Dispose of contents/container to ...
P502	Refer to manufacturer/supplier for information on recovery/recycling

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CAS No.: 866633-26-3

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CAS No.: 866633-26-3

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[ 866633-26-3 ] Synthesis Path-Downstream 1~1

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Physical hazards
Code	Phrase
H200	Unstable explosive
H201	Explosive; mass explosion hazard
H202	Explosive; severe projection hazard
H203	Explosive; fire, blast or projection hazard
H204	Fire or projection hazard
H205	May mass explode in fire
H220	Extremely flammable gas
H221	Flammable gas
H222	Extremely flammable aerosol
H223	Flammable aerosol
H224	Extremely flammable liquid and vapour
H225	Highly flammable liquid and vapour
H226	Flammable liquid and vapour
H227	Combustible liquid
H228	Flammable solid
H229	Pressurized container: may burst if heated
H230	May react explosively even in the absence of air
H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
H241	Heating may cause a fire or explosion
H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
H251	Self-heating; may catch fire
H252	Self-heating in large quantities; may catch fire
H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
H270	May cause or intensify fire; oxidizer
H271	May cause fire or explosion; strong oxidizer
H272	May intensify fire; oxidizer
H280	Contains gas under pressure; may explode if heated
H281	Contains refrigerated gas; may cause cryogenic burns or injury
H290	May be corrosive to metals
Health hazards
Code	Phrase
H300	Fatal if swallowed
H301	Toxic if swallowed
H302	Harmful if swallowed
H303	May be harmful if swallowed