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CAS No. : | 113826-06-5 | MDL No. : | MFCD00010834 |
Formula : | C10H12O4S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | NOQXXYIGRPAZJC-SECBINFHSA-N |
M.W : | 228.26 | Pubchem ID : | 154187 |
Synonyms : |
|
Signal Word: | Danger | Class: | 9 |
Precautionary Statements: | P201-P273-P280-P302+P352-P305+P351+P338+P310-P308+P313 | UN#: | 3077 |
Hazard Statements: | H317-H318-H341-H350-H411 | Packing Group: | Ⅲ |
GHS Pictogram: |
* 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 |
---|---|---|
70% | With hydrogenchloride; N,N-dimethylamino-pyridine; potassium carbonate; triethylamine; In water; | Comparative Example 3 To a suspension of 37.5 g of potassium carbonate (0.27 mol) and 250 ml of 1,2-dichloroethane, was added dropwise at 24-28 C. 20 g of (S)-3-chloro-1,2-propanediol (0.18 mol) (optical purity: 98.9% ee). After finishing the addition, the solution was stirred for 26 hours and cooled. To the reaction solution were added dropwise under stirring at 5-10 C. 20.1 g of triethylamine (0.2 mol) and 0.4 g of N,N-dimethylaminopyridine (0.0033 mol) and 34.5 g of p-toluenesulfonyl chloride (0.18 ml) in order. After finishing the addition the mixture was stirred for 3 hours and the resulting salt was dissolved by adding 150 ml of 3% hydrochloric acid. The organic layer was washed with 150 ml of 1% hydrochloric acid and 150 ml of water. The excess solvent was removed under vacuo. The chemical purity and optical purity at that time were 93.7%, 96.6% ee respectively. The residue was recrystallized from isopropyl alcohol/hexane=1/1 (V/V) to give 28.9 g of (S)-glycidyl tosylate (yield 70%). Chemical purity: 98.3%, optical purity: 97.5% ee |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85.7% | With potassium carbonate; In N,N-dimethyl-formamide; at 20 - 80℃; for 6h;Inert atmosphere; | To a solution 1-(5-benzyloxy-2-hydroxy-phenyl)-ethanone (40 g, 165 mmol) in DMF (400 ml.) was added K2CO3 (86 g, 190 mmol) and followed by (S)-oxiran-2-yl methyl 4- methylbenzenesulfonate (37.7 g, 165 mmol) slowly at room temperature. The mixture was stirred at 80 C for 6 h under an atmosphere of nitrogen. The reaction mixture was diluted with water (500 ml.) and extracted with EtOAc (2 x 200 ml_). The combined organic layer was washed with water (300 ml.) and brine (300 mL), dried (Na2S04) and concentrated under reduced pressure. Purification by column chromatography afforded 1-[5-benzyloxy-2-((S)-1- oxiranylmethoxy)-phenyl]-ethanone as a pale yellow solid (42 g, 140 mMol, 85.7 %). AnalpH2_MeCN_UPLC_4min; Rt: 2.15 min, m/z 299.4 [M+H]+ 1H NMR (400 MHz, CDCIs) d 2.66 (s, 3 H), 2.74-2.76 (m, 1 H), 2.91-2.93 (m, 1 H), 3.35-3.39 (m, 1 H), 3.93-3.98 (m, 1 H), 4.30-4.33 (m, 1 H), 5.04 (s, 2H), 6.90 (d, J = 9.2 Hz, 1 H), 7.06- 7.09 (m, 1 H), 7.30-7.43 (m, 6 H). |
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