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Chemical Structure| 182120-82-7 Chemical Structure| 182120-82-7

Structure of 182120-82-7

Chemical Structure| 182120-82-7

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Product Details of [ 182120-82-7 ]

CAS No. :182120-82-7
Formula : C10H15N3O3S
M.W : 257.31
SMILES Code : O=C(OC(C)(C)C)NCC1=NC(C(N)=O)=CS1

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Application In Synthesis of [ 182120-82-7 ]

* 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 [ 182120-82-7 ]

[ 182120-82-7 ] Synthesis Path-Downstream   1~3

  • 2
  • [ 96929-05-4 ]
  • [ 182120-82-7 ]
YieldReaction ConditionsOperation in experiment
92% With ammonium hydroxide; In methanol; at 45℃; for 16h; Aqueous ammonia (28% w/w, 3,1 mL, 40 mmol) was added to a solution of <strong>[96929-05-4]ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate</strong>2 3 (381 mg, 1.33 mmol) in methanol (1,3 mL). After 16 h at 45C, the reaction mixture was concentrated affording the title compound as a brown oil (315mg, 92%) which was used directn y in the next step. 1H NMR (400 MHz, Methanol-d4) delta 8.10 (s, 1H), 4.49 (s, 2H), 1.45 (s, 9H).
58% With ammonia; water; In methanol; at 5 - 20℃; 33.5 g (0.18 mol) of thiazolyl ester are dissolved in 140 ml of methanol and 3 ml of water and, at 5-10 C., ammonia is introduced until the solution is saturated. The reaction mixture is stirred at room temperature overnight. The solvent is evaporated and the residue is, at 80 C., taken up in 100 ml of n-butanol. The mixture is cooled to 0 C. The precipitate is filtered off with suction, washed twice with in each case 35 ml of n-butanol and twice with in each case 35 ml of MTBE and dried under reduced pressure. Yield 17.3 g (58%), yield corrected for purity: 55% based on the thiazolidine employed. 1H-NMR (DMSO-d6): delta=8.2 (s, 1H, SCHCOOEt), 7.6, 7.7, 7.8 (3*s, 3*1H, 3*NH), 4.4 (s, 2H, CH2NH), 1.4 (s, 9H, tert-butyl) ppm.
With ammonia; water; at 20 - 25℃; for 110h; a) Boc-2-Aminomethylthiazole-4-carboxamide; [00073] At 10 C., ethyl bromopyruvate (386 g, 1.98 mol) was added dropwise to a solution of Boc-glycinethioamide (370 g, 1.94 mol) in 3.9 liters of ethanol, and the mixture was then stirred at 20-25 C. for 5 h, after which 299 ml of a 25% strength aqueous ammonia solution were added. [00074] From 940 ml of this mixture (corresponds to 19.9% of the total volume), 380 ml of ethanol were distilled off, a further 908 ml of a 25% strength aqueous ammonia solution were added and the mixture was stirred at 20-25 C. for 110 h. The mixture was cooled to 0 C. and the solid was filtered off, washed twice with water and dried. This gave 60.1 g of the BOC-protected thiazole carboxamide of an HPLC purity of 97.9 area %, which corresponded to a yield over these two steps of 60.5%. [00075] 1H-NMR (DMSO-d6, in ppm): 8.16 (s, 1H, Ar-H), 7.86 (t, broad, 1H, NH), 7.71 and 7.59 (2×s, broad, 1H each, NH2), 4.42 (d, 2H, CH2), 1.41 (s, 9H, tert-butyl).
  • 3
  • [ 70-23-5 ]
  • [ 89226-13-1 ]
  • [ 182120-82-7 ]
 

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