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CAS No. : | 611-70-1 | MDL No. : | MFCD00008917 |
Formula : | C10H12O | Boiling Point : | - |
Linear Structure Formula : | C6H5C(O)CH(CH3)2 | InChI Key : | BSMGLVDZZMBWQB-UHFFFAOYSA-N |
M.W : | 148.20 | Pubchem ID : | 69144 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P210-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H227-H315-H319 | Packing Group: | N/A |
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 |
---|---|---|
85% | With sodium hydroxide; sodium iodide; In water; | Example 2 Preparation of 3-Phenyl-4-Methylpyrazole (Compound of the Formula I where R1 is Phenyl, R2 is Methyl, R3 is H) 74.8 g (0.505 mol) of isopropyl phenyl ketone are added dropwise over the course of 2 hours to a suspension of 490 g (3.0 mol) of 60% strength sulfuric acid, 31.25 g (0.5 mol) of 80% strength hydrazine hydrate and 0.5 g (3.33 mmol) of sodium iodide at 125 C. After stirring at 125 C. for one hour, the temperature is brought to 140 C. by distilling out 155 ml of water. After cooling, the mixture is adjusted to pH 7.5 with 640 g (4.0 mol) of sodium hydroxide solution. The residue after filtration and drying was recrystallized from ethanol. 69.2 g of pale brown crystals are obtained with a melting point of 115 C. and a purity of 97% (HPLC), which corresponds to a yield of 85% of theory. Identification takes place through the physicochemical data. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
48% | With hydridotetakis(triphenylphosphine)rhodium(I); 1,2-bis-(diphenylphosphino)ethane; In chlorobenzene; for 6h;Inert atmosphere; Reflux; | General procedure: In a two-necked flask equipped with a reflux condenser were placed RhH(PPh3)4 (4 mol%, 11.5 mg), 1,2-bis(diphenylphosphino)ethane (8 mol%, 8.0 mg), 1,3-benzothiazole 5 (0.25 mmol, 27.3 mL), and (alpha-phenylthio)isobutyrophenone 6 (0.25 mmol, 64.0 mg) in chlorobenzene (0.25 mL) under an argon atmosphere, and the solution was heated at reflux for 3 h. The mixture was purified by flash column chromatography on silica gel giving 7 (55.8 mg, 92%) and isobutyrophenone 8 (34.3 mg, 93%) with the recovery of 5 (3.5 mg, 10%) and 6 (0.8 mg, 1%). |