154743-05-2|N-Ethyl-N-methylsulfamide| Ambeed

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CAS No. :	154743-05-2
Formula :	C₃H₁₀N₂O₂S
M.W :	138.19
SMILES Code :	NS(=O)(N(CC)C)=O
MDL No. :	MFCD11623179

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
	With 1,1'-carbonyldiimidazole; lithium hexamethyldisilazane; In tetrahydrofuran; hexane; at 20℃; for 3.75h;Heating / reflux;	Step 1 of Example 19 To a solution of (1R, 2S) l-tert-butoxycarbonylamino-2-vinyl- cyclopropanecarboxylic acid (217 mg, 1.194 mmol) in THF (5 mL), CDI (290 mg, 1. 791 mmol) was added and the reaction mixture was heated under reflux for 45 min. In another round-bottomed flask, LiHMDS (1.0 M solution in hexanes, 2.4 mL, 2.4 mmol) was added to a solution of N-ethylmethylsulfamide (330 mg, 2.388 mmol) in THF (5 mL) and the reaction mixture was stirred at rt for lh. Two reaction mixtures were added together and stirred at rt for 2h. Water was added to quench the reaction and the reaction solution was extracted with EtOAc. The oraganic layer was separated and dried over MgS04. Evaporation of solvent gave crude product which was purified by Prep. HPLC to afford desired N-acylsulfamide. N-acylsulfamide was then dissolved in 4N HC1 solution in dioxane (2mL) and stirred at rt for 4h. Evaporation of solution give brownish oil as HCl salt. (112mg, 33percent yield). 1H NMR (400Mz, CD30D) delta 1. 16 (t, J=7. 21 Hz, 3 H), 1.68 (dd, J=10. 03,7. 83 Hz, 1 H), 2.15 (m, 1 H), 2.37 (m, 1 H), 2.89 (s, 3 H), 3.30 (m, 2 H), 5.31 (d, J=10. 27 Hz, 1 H), 5.42 (d, J=17. 12 Hz, 3 H), 5.68 (m, 1 H). LC-MS (retention time: 0.883 min. ), MS m/z 270 (M+Na+).
		13. Preparation of P1-P1' Sulfamide Derivative; To a solution of (1R,2S) 1-tert-butoxycarbonylamino-2-vinyl-cyclopropanecarboxylic acid (217 mg, 1.194 mmol) in THF (5 mL), was added CDI (290 mg, 1.791 mmol) and the reaction mixture was heated to reflux for 45 minutes. In another round-bottomed flask, LiHMDS (1.0M solution in hexanes, 2.4 mL, 2.4 mmol) was added to a solution of N-ethylmethylsulfamide (330 mg, 2.388 mmol) in THF (5 mL) and the reaction mixture was stirred at room temperature for 1 hour. The two reaction mixtures were combined and stirred at room temperature for 2 hours. Water was added to quench the reaction and the reaction solution was extracted with ethyl acetate. The organic layer was separated and dried over MgSO4. Filtration and concentration gave crude product which was purified by preparative HPLC to provide the desired N-Boc protected N-acylsulfamide. The Boc protecting group was then removed as the compound was dissolved in 4N HCl solution in dioxane (2 mL) and stirred at room temperature for 4 hours. Concentration provided a brownish oil as the HCl salt. (112 mg, 33percent yield). 1H NMR (400Mz, CD3OD) delta 1.16 (t, J=7.21 Hz, 3H), 1.68 (dd, J=10.03, 7.83 Hz, 1H), 2.15 (m, 1H), 2.37 (m, 1H), 2.89 (s, 3H), 3.30 (m, 2H), 5.31 (d, J=10.27 Hz, 1H), 5.42 (d, J=17.12 Hz, 3H), 5.68 (m, 1H). LC-MS (retention time: 0.883 minutes.), MS m/z 270 (M+Na+).

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Code	Phrase
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P222	Do not allow contact with air.
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P230	Keep wetted
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P234	Keep only in original container.
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P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P262	Do not get in eyes, on skin, or on clothing.
P263	Avoid contact during pregnancy/while nursing.
P264	Wash hands thoroughly after handling.
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P270	Do not eat, drink or smoke when using this product.
P271	Use only outdoors or in a well-ventilated area.
P272	Contaminated work clothing should not be allowed out of the workplace.
P273	Avoid release to the environment.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P281	Use personal protective equipment as required.
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P284	Wear respiratory protection.
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Code	Phrase
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P342	If experiencing respiratory symptoms:
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P378
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P391	Collect spillage. Hazardous to the aquatic environment
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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
Code	Phrase
P401
P402	Store in a dry place.
P403	Store in a well-ventilated place.
P404	Store in a closed container.
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P406	Store in corrosive resistant/ container with a resistant inner liner.
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P411
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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.: 154743-05-2

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CAS No.: 154743-05-2

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[ 154743-05-2 ] 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