Structure of 142733-65-1
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CAS No. : | 142733-65-1 |
Formula : | C5H12ClNO |
M.W : | 137.61 |
SMILES Code : | OC[C@H]1C[C@@H](N)C1.[H]Cl |
MDL No. : | MFCD16660356 |
InChI Key : | NGVZDZFNCCGDGQ-UHFFFAOYSA-N |
Pubchem ID : | 19794279 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302 |
Precautionary Statements: | P280-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 |
---|---|---|
With hydrogenchloride; In 1,4-dioxane; dichloromethane; at 20.0℃; | To a solution of tert-butyl (cis-3-(hydroxymethyl)cyclobutyl)carbamate (0.154 g, 0.765 mmol) in DCM (2 mL), HC1 4N in dioxane (0.4 mL, 1.6 mmol) was added at rt. After 5h30 min a further aliquot of HC1 4N in dioxane (0.8 mL, 3.2 mmol) was added and mixture was left at rt until complete conversion. Mixture was evaporated under reduced pressure to obtain cis- 3- (hydroxymethyl)cyclobutan-l-aminium chloride as a white solid (128 mg). Method 1 : Rt=0.83 min, m/z=l02 (M+H)+. The crude compound (38.5 mg, 0.280 mmol) was taken in dry acetonitrile (1.7 mL) and dry DIPEA (0.1 mL, 0.574 mmol) and ethyl 4-(chlorosulfonyl)-3-fluoro-l-methyl- lH-pyrrole-2-carboxylate (50 mg, 0.185 mmol) were added at room temperature. Reaction mixture was stirred overnight and then evaporated under reduced pressure to afford a light brown solid. Crude was purified with flash chromatography (Petroleum ether/ AcOEt) to afford D42 as a white solid (45 mg) m/z = 335 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With [2-(di-tert-butylphosphino)-2?,4?,6?-triisopropyl-1,1?-biphenyl][2-((2-aminoethyl)phenyl)]palladium(II) chloride; sodium t-butanolate; In tert-butyl alcohol; at 20.0℃; for 2h;Inert atmosphere; | Step 1: (7S)-2-((cis-3-(hydroxymethyl)cyclobutyl)amino)-4,7,8-trimethyl-7,8-dihydropteridin-6(5H)-one (7S)-2-chloro-4,7,8-trimethyl-5,7-dihydropteridin-6-one (2.96 g, 13.05 mmol), cis-3-aminocyclobutyl)methanol hydrochloride (1.796 g, 13.05 mmol) and tBuXPhos palladacycle (358.5 mg, 0.5220 mmol) were taken into t-butanol (50 mL) and degassed. A 2M solution of sodium t-butoxide (23 mL, 45.70 mmol) was added to the mixture under nitrogen. After stirring at room temperature for 2 hours, ethyl acetate (100 ml) and water was added to the reaction mixture. The organic layers separated and the aqueous extracted with ethyl acetate (3*50 ml). The combined extracts were dried over anhydrous sodium sulfate, filtered, and evaporated in vacuo to afford the crude product. The crude product was purified by column chromatography (SiO2) eluting with a gradient of 0-20% methanol in dichloromethane to afford 1.07 g (25% yield) of the title product. 1H NMR (300 MHz, CDCl3) delta 9.30 (s, 1H), 9.01 (s, 1H), 5.04 (t, J=10.9 Hz, 1H), 4.39-4.24 (m, 1H), 4.05 (q, J=6.8 Hz, 1H), 3.60 (d, J=5.9 Hz, 2H), 3.04 (s, 3H), 2.87-2.57 (m, 2H), 2.59-2.40 (m, 3H), 2.23 (s, 4H), 1.79-1.58 (m, 2H), 1.38 (d, J=6.8 Hz, 3H). ESMS(M+1)=292.24. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | Step 1: (7S)-2-((cis-3-(hydroxymethyl)cyclobutyl)amino)-7-isopropyl-4,8-dimethyl-7,8-dihydropteridin-6(5H)-one A mixture of (S)-2-chloro-7-isopropyl-4,8-dimethyl-7,8-dihydropteridin-6(5H)-one (5 g, 19.5 mmol), <strong>[142733-65-1]cis-(3-aminocyclobutyl)methanol hydrochloride</strong> (2.95 g, 21.4 mmol), and sodium tert-butoxide (8.07 g, 84 mmol) were taken into t-butanol (80 ml) and dioxane (75 ml) and stirred for 20 mins until most of the solids were dissolved. The mixture was purged with nitrogen for 15 minutes. tBuXPhos palladacycle (Gen 1) (260 mg, 0.4 mmol) was added to the mixture then purged with nitrogen for 10 minutes. The reaction was stirred at 60 C. for 1 hour. The reaction mixture was evaporated in vacuo and the resulting residue was taken into 100 ml of water and extracted with dichloromethane (2*80 ml). The extracts were combined, washed with brine, dried over anhydrous sodium sulfate, filtered, and evaporated in vacuo to afford the crude product. The product was purified by column chromatography (120 g SiO2 column) eluting with a gradient of dichloromethane to 20% methanol. The desired fractions were combined and evaporated to afford a light green solid, 3.5 g. The solid was dissolved in dichloromethane (30 ml), added MP-TMP resin (1.5 g) and stirred for 12 hours. This was filtered through Celite and the filtrate evaporated in vacuo. The resulting solid was washed with heptanes and filtered to afford 3.4 g (55% yield) of the product as a white solid. 1H NMR (300 MHz, CDCl3) delta 5.55 (s, 1H), 4.32 (dd, J=15.7, 8.1 Hz, 1H), 3.97-3.85 (m, 1H), 3.63 (d, J=5.9 Hz, 2H), 3.15 (s, 3H), 2.62-2.44 (m, 2H), 2.31-2.15 (m, 4H), 1.81-1.62 (m, 2H), 1.08 (d, J=6.9 Hz, 3H), 0.93 (d, J=6.9 Hz, 3H). ESI-MS m/z 320.09 (M+1)+; [alpha]D=+258.98 (c=1.0, CHCl3) at 22.3 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
45 mg | With N-ethyl-N,N-diisopropylamine; In acetonitrile; at 20.0℃; | To a solution of tert-butyl (cis-3-(hydroxymethyl)cyclobutyl)carbamate (0.154 g, 0.765 mmol) in DCM (2 mL), HC1 4N in dioxane (0.4 mL, 1.6 mmol) was added at rt. After 5h30 min a further aliquot of HC1 4N in dioxane (0.8 mL, 3.2 mmol) was added and mixture was left at rt until complete conversion. Mixture was evaporated under reduced pressure to obtain cis- 3- (hydroxymethyl)cyclobutan-l-aminium chloride as a white solid (128 mg). Method 1 : Rt=0.83 min, m/z=l02 (M+H)+. The crude compound (38.5 mg, 0.280 mmol) was taken in dry acetonitrile (1.7 mL) and dry DIPEA (0.1 mL, 0.574 mmol) and ethyl 4-(chlorosulfonyl)-3-fluoro-l-methyl- lH-pyrrole-2-carboxylate (50 mg, 0.185 mmol) were added at room temperature. Reaction mixture was stirred overnight and then evaporated under reduced pressure to afford a light brown solid. Crude was purified with flash chromatography (Petroleum ether/ AcOEt) to afford D42 as a white solid (45 mg) m/z = 335 (M+H)+. |
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