92260-32-7|6-Bromo-2,3-dimethyl-3H-imidazo[4,5-b]pyridine| Ambeed

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CAS No. :	92260-32-7
Formula :	C₈H₈BrN₃
M.W :	226.07
SMILES Code :	CN1C(C)=NC2=CC(Br)=CN=C21
MDL No. :	MFCD08692134

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302-H315-H319-H335
Precautionary Statements:	P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501

Yield	Reaction Conditions	Operation in experiment
	at 140℃; for 38.5h;	A solution of 5-bromo-N2-methyl-pyridine-2 3-diamine (Stage 67.1.4, 960 mg, 4 75 mmol) in triethylorthoacetate (Aldrich, Buchs, Switzerland, 25 ml) was stirred for 38 5 h at 140C. The reaction mixture was evaporated to dryness. The residue was dissolved in EtOAc and washed with saturated aqueous NaHCO3. The aqueous layer was extracted with EtOAc and the combined organic layers washed with brine, dried over Na2SO4, filtered and evaprated. The crude product was dry loaded on silica gel and purified by MPLC (DCM/MeOH 0% - 4%) to give the title compound as a brown solid (HPLC. tR 1 95 mm (Method A); M+H = 226, 228 MS-ES).
	With acetic acid; at 80℃; for 2h;	To a suspension of <strong>[89415-54-3]5-bromo-N2-methylpyridine-2,3-diamine</strong> (510 mg, 2.51 mmol) in AcOH (20 mL) was added MeC(OEt)3 (1 mL) and the solution was warmed to 80 C. for 2 hours. The reaction mixture was allowed to cool to room temperature and was concentrated in vacuo. The crude residue was purified by silica gel column chromatography (0-25% THF/CH2Cl2 gradient) to afford the desired product. 1H NMR (400 MHz, CDCl3) delta 8.36 (d, J=1.8 Hz, 1H), 8.06 (d, J=1.9 Hz, 1H), 3.80 (s, 3H), 2.65 (s, 3H).

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P221	Take any precaution to avoid mixing with combustibles
P222	Do not allow contact with air.
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P230	Keep wetted
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P233	Keep container tightly closed.
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P235	Keep cool
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P263	Avoid contact during pregnancy/while nursing.
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P265	Wash skin thouroughly after handling.
P270	Do not eat, drink or smoke when using this product.
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P272	Contaminated work clothing should not be allowed out of the workplace.
P273	Avoid release to the environment.
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P281	Use personal protective equipment as required.
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P285	In case of inadequate ventilation wear respiratory protection.
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Response
Code	Phrase
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P304	IF INHALED:
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P321
P322
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P342	If experiencing respiratory symptoms:
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P376	Stop leak if safe to do so. Oxidising gases (section 2.4) 1
P377	Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P378
P380	Evacuate area.
P381	Eliminate all ignition sources if safe to do so.
P390	Absorb spillage to prevent material damage.
P391	Collect spillage. Hazardous to the aquatic environment
P301 + P310	IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P301 + P312	IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P301 + P330 + P331	IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302 + P334	IF ON SKIN: Immerse in cool water/wrap in wet bandages.
P302 + P350	IF ON SKIN: Gently wash with plenty of soap and water.
P303 + P361 + P353	IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304 + P312	IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.
P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P304 + P341	IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P306 + P360	IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P307 + P311	IF exposed: call a POISON CENTER or doctor/physician.
P308 + P313	IF exposed or concerned: Get medical advice/attention.
P309 + P311	IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician.
P332 + P313	IF SKIN irritation occurs: Get medical advice/attention.
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.
P342 + P311	IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P370 + P376	In case of fire: Stop leak if safe to Do so.
P370 + P378	In case of fire:
P370 + P380	In case of fire: Evacuate area.
P370 + P380 + P375	In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion.
P371 + P380 + P375	In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
Storage
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P401
P402	Store in a dry place.
P403	Store in a well-ventilated place.
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P411
P412	Do not expose to temperatures exceeding 50 oC/ 122 oF.
P413
P420	Store away from other materials.
P422
P402 + P404	Store in a dry place. Store in a closed container.
P403 + P233	Store in a well-ventilated place. Keep container tightly closed.
P403 + P235	Store in a well-ventilated place. Keep cool.
P410 + P403	Protect from sunlight. Store in a well-ventilated place.
P410 + P412	Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF.
P411 + P235	Keep cool.
Disposal
Code	Phrase
P501	Dispose of contents/container to ...
P502	Refer to manufacturer/supplier for information on recovery/recycling

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CAS No.: 92260-32-7

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CAS No.: 92260-32-7

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[ 92260-32-7 ] Synthesis Path-Downstream 1~2

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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