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CAS No. : | 2043-61-0 | MDL No. : | MFCD00001457 |
Formula : | C7H12O | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | KVFDZFBHBWTVID-UHFFFAOYSA-N |
M.W : | 112.17 | Pubchem ID : | 16275 |
Synonyms : |
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Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | 1989 |
Hazard Statements: | H226-H315-H319-H335 | 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 |
---|---|---|
Cyclohexanecarboxaldehyde (145muL, 1.2mmol) and Boc-aminoethylpiperazine (229mg, 1mmol) were stirred in DCM (10ml) at room temperature for 30mins before the addition of STAB (424mg, 2mmol) and acetic acid (114mul_, 2mmol). The reaction was stirred at room temperature for 24hr before being quenched with 2M NaOH (20ml) and the product extracted with DCM (3 x 10ml). The combined organic layers were dried over Na2SO4, and concentrated in vacuo to yield a brown oil. The brown oil was dissolved in DCM (10ml) before the addition of triethylamine (278mul, 2mmol) and indole-3-glyoxylyl chloride (414mg, 2mmol). The reaction was stirred at room temperature for 24hr. The solvent was removed in vacuo and the reaction quenched with water (20ml). The product was extracted with EtOAc (3 x 20ml), and the combined organic layers were dried over Na2SO4, and concentrated in vacuo to yield the product, 4-(2- {cyclohexylmethyl-[2-(1H-indol-3-yl)-2-oxo-acetyl]-amino}-ethyl)-piperazine-1- carboxylic acid tert-butyl ester 84, as a brown oil which was carried through to the next step without further purification | ||
Cyclohexanecarboxaldehyde (145muL, 1.2mmol) and Boc-aminoethylpiperazine (229mg, 1 mmol) were stirred in DCM (10ml) at room temperature for 30mins before the addition of STAB (424mg, 2mmol) and acetic acid (114muL, 2mmol). The reaction was stirred at room temperature for 24hr before being quenched with 2M NaOH (20ml) and the product extracted with DCM (3 x 10ml). The combined organic layers were dried over Na2SO4, and concentrated in vacuo to yield a brown oil. The brown oil was dissolved in DCM (10ml) before the addition of triethylamine (278mul, 2mmol) and indole-3-glyoxylyl chloride (414mg, 2mmol). The reaction was stirred at room temperature for 24hr. The solvent was removed in vacuo and the reaction quenched with water (20ml). The product was extracted with EtOAc (3 x 20ml), and the combined organic layers were dried over Na2SO4, and concentrated in vacuo to yield the product, 4-(2- {cyclohexylmethyl-[2-(1 H-indol-3-yl)-2-oxo-acetyl]-amino}-ethyl)-piperazine-1- carboxylic acid tert-butyl ester 84, as a brown oil which was carried through to the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
General procedure: Ammonium salt 6 (1 equiv.) was suspended in dry THF (0.05 M) andstirred at 40 °C. t-BuOK (4 equiv.) was added and the mixture was stirred vigorously. After 10 minutes 2 equiv. of aldehyde 2 were added and the mixture was stirred for 3 hours at 40 °C. The reaction was then quenched by addition of a half-saturated NaCl solution. After phase separation, the aqueous phase was extracted three times with DCM and the combined organic phases were dried with Na2SO4 and evaporated to dryness. Purification by columnchromatography (gradient of heptanes and EtOAc) gave the corresponding epoxides in the reported yields as a mixture of diastereomers. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
15% | General procedure: To a solution of cyclohexanecarboxyaldehyde 6a (0.224 mL, 1.85 mmol) in acetic acid (6 mL) phenylhydrazine (7) was added (0.182 mL, 1.85 mmol) and the reaction mixture was then heated to 80 °C for 2 h. Then methyl 4-formylbenzoate 8a (0.359 g, 1.85 mmol) in 1,2-DCE (6 mL) was added at 0 °C and after 15 min NaBH(OAc)3 (0.943 g, 4.25 mmol) was added portionwise. Reaction mixture was stirred at 25 °C for 12 h. Solvents were removed under reduced pressure, residue was diluted with 10 mL of EtOAc and washed with a saturated solution of Na2CO3. The combined organic phases were dried (Na2SO4) and concentrated in vacuo. Purification by column chromatography on silica gel (EtOAc/n-hexane 1:20) afforded the title compound as a yellow oil (yield 16percent). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With 3-((3,5-bis(trifluoromethyl)phenyl)amino)-4-(((S)-(6-methoxyquinoline-4-yl))((1S,2S,4S,5R-5-vinylquinuclidine-2-yl)methyl)amino)cyclobutan-3-ene-1,2-dione; In neat liquid; at 50℃; for 48h; | General procedure: Reactions were carried out with <strong>[66521-66-2]4-(pyridin-3-yl)pyrimidin-2-amine</strong> 1 (0.50 mmol), aldehyde 2 (0.50 mmol) and malonate 3 (5 mmol) in the presence of catalyst III or IV (10 molpercent) at 50 °C and stirred for 48h. After completion of the reaction (as observed by TLC), the crude product was purified by preparative TLC (GF254 silica gel: hexane/EtOAc = 7/1), giving the target chiral product |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
86% | With quinine; In neat liquid; at 50℃; for 48h; | General procedure: Reactions were carried out with <strong>[66521-66-2]4-(pyridin-3-yl)pyrimidin-2-amine</strong> 1 (0.50 mmol), aldehyde 2 (0.50 mmol) and malonate 3 (5 mmol) in the presence of catalyst III or IV (10 molpercent) at 50 °C and stirred for 48h. After completion of the reaction (as observed by TLC), the crude product was purified by preparative TLC (GF254 silica gel: hexane/EtOAc = 7/1), giving the target chiral product |