Structure of 18102-21-1
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 18102-21-1 |
Formula : | C9H13N |
M.W : | 135.21 |
SMILES Code : | NC1=C(C)C=CC(C)=C1C |
MDL No. : | MFCD09965929 |
Boiling Point : | No data available |
InChI Key : | FHMPFSKGDPKPDJ-UHFFFAOYSA-N |
Pubchem ID : | 11958947 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | EXAMPLE 2 Following the procedure as described in Example 1, 100 parts of 2,3,6-trimethylcyclohexan-1-one are reacted per hour, at 230 C. but otherwise under the same conditions as those of Example 1. 2,3,6-Trimethylaniline, boiling point 119 C./20 mm Hg, is obtained in a yield of 93%. | |
92% | EXAMPLE 15 Following the procedure described in Example 14, 50 parts of 2,3,6-trimethylcyclohexanol per hour are reacted at 240 C., but otherwise under the conditions of Example 14. 2,3,6-Trimethylaniline, boiling point 119 C./20 mm Hg, is obtained in a yield of 92%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With ammonia; | EXAMPLE 11 A mixture of 54 g of 2,3,6-trimethylaniline, 41 g of liquid ammonia and 6 g of catalyst composed of 10% by weight of palladium and 5% by weight of praseodymium oxide on aluminum oxide is hydrogenated at 230 C. and under a hydrogen pressure of 250 bar in a 300 ml stirred autoclave until the pressure remains constant. The reaction product consists of pure 2,3,6-trimethylcyclohexylamine (boiling point=78-81 C./23 mm Hg). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate; In N-methyl-acetamide; (2S)-N-methyl-1-phenylpropan-2-amine hydrate; | (a) 165 g of 2-bromo-4-butyrolactone is slowly added at 10 to 135 g of 2,3,6-trimethylaniline and 106 g of sodium carbonate in 750 ml of dimethylformamide, and the mixture is subsequently stirred for 16 hours at 70 and for 24 hours at 100. After cooling to +10, there is added, with cooling, 1200 ml of ice water. Stirring is maintained at 10 for 2 hours; the precipitate is filtered off and subsequently washed with water and petroleum ether to leave 3-[N-(2,3,6-trimethylphenyl)]-amino-tetrahydro-2-furanone, m.p. 108-110. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In toluene; | a. Preparation of the intermediate A solution comprising 595 g (4.4 moles) of 2,3,6-trimethylaniline in 1 liter of toluene is heated to boiling 503 g (2.2 moles) of p-toluenesulfonic-acid-(2-methoxyethyl)-ester is dropped thereto within 6 hrs. The reaction mixture is cooled, poured into 2 liter of isopropylethylether and the solid residue filtered off and washed with diethylether. The combined filtrates are evaporated. After distillation in vacuo 301 g (i.e. 71% theoretical amount) of N-(2-methoxyethyl)-2,3,6-trimethylaniline are obtained, b-p. 141-144 C/14 Torr. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In toluene; | a. Preparation of the intermediate According to the method of Example 1a 553 g (2.26 moles) of p-toluenesulfonic-acid-(2-ethoxyethyl)-ester are added to a solution of 607 g (4.5 moles) 2,3,6-trimethylaniline in 1 liter of toluene. 317 g(68% of theoretical amount) of N-(2-ethoxyethyl)-<strong>[18102-21-1]2,3,6-trimethyl-aniline</strong> are obtained, b.p. 150-152 C / 14 Torr. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydrogencarbonate; | a. N(1'-methoxycarbonyl-ethyl)-N-(furan-(2")-carbonyl)-2,3,6-trimethylaniline. A suspension of 51.5 g (0.382 mole) of 2,3,6-trimethylaniline, 35.3 g of NaHCO3 and 126 ml (1.15 moles) of 2-bromopropionic acid methyl ester is stirred for 6 hours at a bath temperature of 130 C., then cooled, filtered from NaBr-salt and distilled. Yield: 67.3 g of α-(2,3,6-trimethylanilino)propionic acid methyl ester (b.p. 144-146 C./9 Torr.) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
45% | With potassium hydroxide; In dimethyl sulfoxide; at 140℃; for 16.0h;Green chemistry; | General procedure: A reaction tube was charged with the 2-aryloxypropanamide (1.0 mmol), potassium hydroxide (112 mg, 2.0 mmol), DMSO (3 mL) and 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU 1 mL).The mixture was heated at 140 C for 3-16 h. The reaction was monitored by TLC. After the reaction period, the reaction mixture was cooled, diluted with saturated brine and extracted with dichloromethane three times. The combined organic layers were washed with three portions of saturated brine and then dried over MgSO4 and filtered. Solvent was removed under reduced pressure. The product was purified through flash column chromatography on 300-400 mesh silica gel with petroleum ether/ethyl acetate as eluent. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With hydrogenchloride; In water; for 5.0h;Reflux; | To the reaction flask was added 2-hydroxy-N- (2,3,6-trimethylphenyl) propanamide 9d (3.2 g, 15.4 mmol)4N aqueous hydrochloric acid solution (60 mL),Heated to reflux for 5 hours.Concentrated under reduced pressure to dry,Add water (70 mL),Ammonia to adjust the pH to 10,Ethyl acetate (50 mL x 3) was added, the organic phases were combined, dried over anhydrous sodium sulfate, filtered, concentrated under reduced pressure,Silica gel column chromatography and purification (petroleum ether / ethyl acetate (v / v) = 25: 1-15: 1)To give a pale yellow oil2,3,6-trimethylaniline 9e (1.9 g, yield 91%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With triethylamine; isobutyl chloroformate; In dichloromethane; at 20℃; for 6.0h;Cooling with ice; | To the reaction flask was added (S) -1-t-butoxycarbonylpiperidine-2-carboxylic acid (3.1 g, 13.3 mmol) and dichloromethane (20 mL)Ice bath cooling,Triethylamine (1.5 g, 14.7 mmol) was added,A solution of isobutyl chloroformate (2.0 g, 14.7 mmol)In dichloromethane (10 mL),After incubation for 1 hour dropwise,A solution of 2,3,6-trimethylaniline 9e (1.5 g, 11.1 mmol)In dichloromethane (10 mL),The reaction was stirred at room temperature for 5 hours.(30 mL x 2), the organic phases were combined, dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure, and the silica gel (10 mL) was added to the reaction mixture, and the reaction mixture was added with water and dichloromethane (50 mL).Column chromatography and purification (petroleum ether / ethyl acetate (v / v) = 20: 1-15: 1) gave a white solid (S) -tertButyl-2 - (2,3,6-trimethylphenyl) carbamoyl) piperidine-1-carbonate 9f (2.6 g, 68% yield). |