89483-06-7|(S)-2-((tert-Butoxycarbonyl)amino)-3-cyclopropylpropanoic acid| Ambeed

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CAS No. :	89483-06-7
Formula :	C₁₁H₁₉NO₄
M.W :	229.27
SMILES Code :	O=C(O)[C@@H](NC(OC(C)(C)C)=O)CC1CC1
MDL No. :	MFCD00798616
InChI Key :	GKRRTFCDSZGFSZ-QMMMGPOBSA-N
Pubchem ID :	5706350

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H302-H315-H319-H335
Precautionary Statements:	P261-P305+P351+P338

Yield	Reaction Conditions	Operation in experiment
97%	With potassium carbonate; In tetrahydrofuran; water;	Step 8: Preparation of L-Boc-3-cyclopropylalanine <strong>[102735-53-5]L-3-cyclopropylalanine</strong> (10 g) is suspended in tetrahydrofuran (30 mL). Water (30 mL), potassium carbonate (36.7 g), and di-tert-butyl-dicarbonate (21.9 g) are added. Additional water is added to produce a solution which is stirred for 12 hours at room temperature. The organic solvent is then evaporated and the aqueous solution is washed with ether, then acidified to pH 3 with 1N aqueous citric acid. The solution is extracted with methylene chloride and the solvent evaporated to give the title compound (18.9 g, 97percent yield).
97%	With potassium carbonate; In tetrahydrofuran; water; at 0 - 20℃;	Into a 1000-mL 3- necked round-bottom flask, was placed <strong>[102735-53-5](2S)-2-amino-3-cyclopropylpropanoic acid</strong> (10 g, 77.43 mmol, 1.00 equiv), tetrahydrofuran (120 mL), water(120 mL), potassium carbonate (36.7 g, 265.54 mmol, 3.40 equiv). This was followed by the addition of di-tert-butyl dicarbonate (21.9 g, 100.35 mmol, 0.80 equiv) dropwise with stirring at 0oC. The resulting solution was stirred for overnight at room temperature. The resulting solution was extracted with 2x60 mL of ether and the aqueous layers combined. and the organic layers combined. The pH value of the solution was adjusted to 3 with citric acid (2 mmol/L). The resulting solution was extracted with 3x100 mL of dichloromethane and the organic layers combined and dried over anhydrous sodium sulfate and concentrated under vacuum. This resulted in 17.2 g (97percent) of (2S)-2-[[(tert- butoxy)carbonyl]amino]-3-cyclopropylpropanoic acid as colorless oil. MS (ES, m/z): 228 (M-H).

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P230	Keep wetted
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P378
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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:
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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
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P411 + P235	Keep cool.
Disposal
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P501	Dispose of contents/container to ...
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CAS No.: 89483-06-7

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CAS No.: 89483-06-7

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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