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Chemical Structure| 29637-56-7 Chemical Structure| 29637-56-7

Structure of 29637-56-7

Chemical Structure| 29637-56-7

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Product Details of [ 29637-56-7 ]

CAS No. :29637-56-7
Formula : C6H13NO2
M.W : 131.17
SMILES Code : CC(C)(N)CC(OC)=O
MDL No. :MFCD19203855

Safety of [ 29637-56-7 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H225-H318
Precautionary Statements:P280-P305+P351+P338
Class:3(8)
UN#:2924
Packing Group:

Application In Synthesis of [ 29637-56-7 ]

* 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.

  • Downstream synthetic route of [ 29637-56-7 ]

[ 29637-56-7 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 67-56-1 ]
  • [ 625-05-8 ]
  • [ 29637-56-7 ]
YieldReaction ConditionsOperation in experiment
100% With thionyl chloride; at 0 - 20℃;Reflux; EXAMPLE C1; 4,4-dimethyl-1-[4-(4-methylpiperazin-1-yl)benzyl]-3,4-dihydro-2H-pyrimido[2,1-b]quinazoline-2,6(1H)-dione hydrochloride Stage 1: methyl 3-methyl-3-(4-oxo-2-thioxo-1,4-dihydroquinazolin-3(2H)-yl)butanoateThionyl chloride (1.56 mL) is added to a solution cooled down to 0° C., of <strong>[625-05-8]3-amino-3-methylbutanoic acid</strong> (1 g) in methanol (8 mL). The mixture is stirred for 10 minutes at 0° C. then brought to ambient temperature and heated under reflux for 3 hours. The mixture is then concentrated under reduced pressure at 40° C. then dichloromethane is added to the oily residue and the reaction medium is again concentrated under reduced pressure at 40° C. This co-evaporation is repeated several times until methyl 3-amino-3-methylbutanoate is obtained in solid form (1.83 g, quantitative yield). Triethylamine (10 mL) then a solution of methyl 2-isothiocyanatobenzoate (1.65 g) in methanol (2 mL) are added to a solution of methyl 3-amino-3-methylbutanoate (1.43 g) in methanol (4 mL). The mixture is stirred at ambient temperature for 4 days then filtered. The solid obtained is washed with a minimum amount of methanol then with diethyl ether then dried in order to produce the expected compound in the form of a white powder (1.2 g, 48percent yield).MS/LC: calculated MM=292.1; m/z=293.1 (MH+)NMR (1H, 400 MHz, DMSO-d6): delta1.36 (s, 3H), 1.40 (s, 3H), 2.76 (dd, 2H), 3.75 (s, 3H), 7.23 (AB, 1H), 7.48 (t, 1H), 7.63 (t, 1H), 7.94 (AB, 1H), 9.98 (s, 1H).
With thionyl chloride; at 0 - 20℃; Example 10 Synthesis of tert-butyl 2-methyl-4-oxobutan-2-ylcarbamate Step A: Synthesis of methyl 3-amino-3-methylbutanoate To 3-amino-3-methyl-butyric acid 10-1 (1 eq.) in methanol at 0° C. was added 2 eq. of thionyl chloride. The reaction mixture was warmed to room temperature and stirred overnight. The solvent was evaporated to give azeotropic mixture of 10-2 and toluene (x=3) which was used for Step B. MS: MH+=132.1
With thionyl chloride; at 0 - 20℃; Step A: Synthesis of methyl 3-amino-3-methylbutanoate10-1 10-2To 3 -amino-3 -methyl-butyric acid 10-1(1 eq.) in methanol at 00C was added 2 eq. of thionyl chloride. The reaction mixture was warmed to room temperature and stirred overnight. The solvent was evaporated to give azeotropic mixture of 10-2 and toluene (x=3) which was used for Step B. MS: MH+ = 132.1
With thionyl chloride; at 80℃; for 12h; Methyl 3-amino-3-methyl-butanoate (Intermediate BO) [00422] To a mixture of 3-amino-3-methyl-butanoic acid (1.00 g, 8.54 mmol, CAS 625-05- 8) in methanol (10 mL) was added thionyl chloride (3.05 g, 25.6 mmol). Then the mixture was stirred at 80 °C for 12 hours. The mixture was concentrated in vacuo to give the title compound, which was used without further purification.
With thionyl chloride; at 20 - 50℃; for 12h;Inert atmosphere; To a solution of 3-amino-3-methyl-butanoic acid (1.00 g, 8.54 mmol) in methanol (20.0 mL) was added sulfur dichloride (508 mg, 4.27 mmol) dropwise at rt. The solution was then stirred at 50 °C for 12 hrs. On completion, the reaction was concentrated in vacuo to give the title compound.

 

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