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CAS No. : | 99438-28-5 | MDL No. : | MFCD21332906 |
Formula : | C21H37BO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 316.33 | Pubchem ID : | - |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Yield given. Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; boron trifluoride diethyl etherate; dihydrogen peroxide 1) THF, 0 deg C, 2 h, 2) THF, -78 deg C, 3 h, 3) THF, 12 h, RT; Yield given. Multistep reaction. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With lithium dicyclohexylamide In tetrahydrofuran; diethyl ether; hexane at -95℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at -78 - 20℃; | ||
In diethyl ether at -78 - 20℃; for 1.25h; | ||
In diethyl ether at 0 - 20℃; |
In diethyl ether at 0℃; for 1h; | ||
In tetrahydrofuran; diethyl ether at 0 - 20℃; | ||
In diethyl ether for 1h; | ||
In diethyl ether at 20℃; for 1h; | ||
In diethyl ether at 25℃; for 1h; | ||
In diethyl ether at 0℃; for 0.75h; | ||
In diethyl ether at -78 - 25℃; for 1.5h; | ||
In diethyl ether at -78 - 20℃; for 1.5h; | ||
In diethyl ether at 20℃; for 2.5h; | ||
In tetrahydrofuran; diethyl ether at -78 - 25℃; for 1.25h; | ||
In diethyl ether at -78 - 20℃; for 1.16667h; | ||
In diethyl ether at 0 - 25℃; for 1h; | ||
In diethyl ether at 20℃; for 1h; | ||
In diethyl ether at 0 - 23℃; for 1h; Inert atmosphere; | ||
In diethyl ether at 0 - 23℃; Inert atmosphere; | ||
In diethyl ether at 0 - 20℃; Inert atmosphere; | ||
In diethyl ether at -78 - 20℃; for 1.25h; Inert atmosphere; | ||
In diethyl ether at 0℃; for 1h; Inert atmosphere; | ||
In diethyl ether at 0 - 20℃; for 1h; Inert atmosphere; | ||
In diethyl ether at -78 - 20℃; for 1.25h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: allyldimethylphenylsilane With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -45℃; for 2h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 0.5h; Stage #3: With boron trifluoride diethyl etherate at -78℃; | ||
Stage #1: allyldimethylphenylsilane With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.333333h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 0.583333h; | ||
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.416667h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether; hexane at -78℃; for 0.5h; | ||
With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane for 1h; cooling; |
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - 0℃; for 0.0833333h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Further stages.; | ||
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.166667h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere; | ||
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -42℃; for 0.583333h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether; hexane at -78℃; for 1h; Inert atmosphere; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran; diethyl ether; hexane at -78℃; Inert atmosphere; | ||
Stage #1: (Z)-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.25h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.333333h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 0.583333h; | ||
With n-butyllithium; potassium <i>tert</i>-butylate | ||
With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane for 1h; cooling; |
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether; hexane at -78℃; for 0.5h; Further stages.; | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -45℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 1h; Further stages.; | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; Stage #2: (+)-B-methoxydiisocamphenylborane In diethyl ether; hexane at -78℃; for 0.666667h; Further stages.; | ||
With n-butyllithium; boron trifluoride diethyl etherate; potassium <i>tert</i>-butylate | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether; hexane at -78℃; Inert atmosphere; | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -50℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran; hexane at -78℃; for 0.5h; | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether; hexane at -78℃; for 0.5h; Inert atmosphere; | ||
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 0.166667h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran; hexane Inert atmosphere; | 4.5.1.1. (1R,2R)-1-(2,4-bis(benzyloxy)-6-chloro-5-phenylpyridin-3-yl)-2-methylbut-3-en-1-ol 6 To a stirred mixture of potassium tert-butoxide (67 mg, 0.55 mmol, 1.2 equiv, dried at 80 °C/0.5 mm for 8 h) in THF (0.55 mL) and trans-2-butene (0.1 mL, 1.15 mmol, 2.5 equiv) was added n-butyllithium (2.5 M in hexane, 0.22 mL, 0.55 mmol, 1.2 equiv) at -78 °C. The reaction mixture was stirred at -45 °C for 10 min and was subsequently cooled down to -78 °C. (+)-Methoxydiisopinocamphenylborane (1 M in ether, 0.7 mL, 0.70 mmol, 1.5 equiv) was added and the mixture was stirred at -78 °C for 30 min. Boron trifluoride etherate (0.1 mL, 0.80 mmol, 1.7 equiv) was added dropwise. A solution of the aldehyde 5 (200 mg, 0.46 mmol, 1 equiv) in THF (0.46 mL) was then added with a syringe pump (flow rate 5 mL/h) at -78 °C. The mixture was stirred at this temperature for 4 h, treated with 0.40 mL of 3 N NaOH and 0.16 mL of 30% H2O2, and refluxed for 1 h. The aqueous layer was extracted with dichloromethane. The organic layer was washed with water and brine, and dried over magnesium sulfate. The solvent was removed under reduced pressure and the crude mixture was purified by flash column chromatography (EtOAc/petroleum ether 10:90) to furnish the expected alcohol 6 as a yellow oil (51 mg, 23%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: allyl (4-methoxyphenyl) ether With sec.-butyllithium In tetrahydrofuran at -78℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 1h; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran at -78℃; for 0.0833333h; Further stages.; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at -78 - 20℃; for 1.25h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methylallylether With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 0.166667h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane at -78℃; for 1h; | ||
With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 1h; | ||
Stage #1: methylallylether With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 0.5h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane at -78℃; for 1h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | Stage #1: 3,3-dimethyl-allyl chloride With magnesium In diethyl ether at 0 - 5℃; for 1h; Stage #2: (+)-B-methoxydiisocamphenylborane In diethyl ether at 0℃; for 4h; | |
90% | Stage #1: 3,3-dimethyl-allyl chloride With magnesium In diethyl ether at 0 - 10℃; for 1h; Stage #2: (+)-B-methoxydiisocamphenylborane In diethyl ether at 0℃; for 3h; Further stages.; | |
90% | With magnesium In diethyl ether (N2); dropwise addn. of alkene to a stirred suspn. of Mg in ether, stirring for 1 h, addn. to a soln. of boron compd. in ether at 0°C, stirring for 4 h; filtration using Kramer's filter, washing with ether, concn. of org. layer, addn. of pentane, stirring for 5 min, sepn. of ppt., evapn., washingwith pentane; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 1-<(2-methoxyethoxy)methoxy>-2-propene With sec.-butyllithium In tetrahydrofuran at -78℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 1h; Stage #3: 2,2,2-Trifluoroacetaldehyde In tetrahydrofuran at -100 - -78℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 1-<(2-methoxyethoxy)methoxy>-2-propene With sec.-butyllithium In tetrahydrofuran at -78℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran at -78℃; | ||
Stage #1: 1-<(2-methoxyethoxy)methoxy>-2-propene; (+)-B-methoxydiisocamphenylborane With sec.-butyllithium In tetrahydrofuran at -78℃; for 1h; Stage #2: With boron trifluoride diethyl etherate In tetrahydrofuran at -100℃; Further stages.; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: isoprene With n-butyllithium; 2,2,5,5-tetramethylpiperidine; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -60℃; for 0.333333h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.0833333h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -45℃; for 0.333333h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 1-<(2-methoxyethoxy)methoxy>-2-propene With sec.-butyllithium In tetrahydrofuran at -78℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methylallylether With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane at -78℃; for 1h; Stage #3: 4-methoxy-benzaldehyde With boron trifluoride diethyl etherate In tetrahydrofuran; cyclohexane at -78 - 20℃; Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at 0℃; for 2h; | ||
In tetrahydrofuran at 20℃; for 4h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: allyl methoxymethyl ether With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 0.5h; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane at -78℃; for 1h; | ||
With boron trifluoride diethyl etherate; sec.-butyllithium | ||
With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 1.5h; |
With CH3CH2CH(CH3)Li In tetrahydrofuran treatment of 1.3 equiv. of allyl ether deriv. with 1 equiv. of s-butyllithium in THF at -78°C for 30 min, addn. of 1 equiv. of 1 M THF soln. of borane deriv. at -78°C, keeping for 1 h; not isolated; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at -78 - 20℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: diethyl ether / 1.17 h / -78 - 20 °C 2: diethyl ether / 2 h / -78 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: BH3*SMe2 / tetrahydrofuran / 18 h / 20 °C 2: diethyl ether / 2 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: sec-BuLi / tetrahydrofuran / 1 h / -78 °C 1.2: BF3*Et2O / tetrahydrofuran / -100 °C 2.1: tetrahydrofuran / 2 h / -100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: sec-BuLi / tetrahydrofuran / 0.5 h / -78 °C 1.2: tetrahydrofuran / 1 h / -78 °C 1.3: BF3*Et2O / tetrahydrofuran / 0.08 h / -78 °C 2.1: tetrahydrofuran / 2 h / -100 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sec.-butyllithium In tetrahydrofuran |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to glycine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
90% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to glycine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to N-methylglycine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, obtaining viscous liquid; | |
92% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to N-methylglycine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, obtaining viscous liquid; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to alanine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
92% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to alanine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to valine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
92% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to valine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to l-proline in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
90% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to l-proline in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
66% | In tetrahydrofuran; methanol addn. of soln. of (+)(C10H17)2BOCH3 in THF to l-proline in methanol, stirring at 60-65°C for 0.5 h; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum, washing with ether, recrystn. from methanol/pentane (3:1); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to phenylalanine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
90% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to phenylalanine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to N,N-dimethylglycine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, obtaining viscous liquid; | |
95% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to N,N-dimethylglycine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, obtaining viscous liquid; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | In tetrahydrofuran; ethanol; water dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to phenylglycine in ethanol/H2O (1:1), stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; | |
87% | In tetrahydrofuran; dimethyl sulfoxide dropwise addn. of 1 M soln. of (+)(C10H17)2BOCH3 in THF to phenylglycine in DMSO, stirring at 80-100°C; control of completion of the reaction by (11)B-NMR, removing of solvent under vacuum (1-2.0 mm), treating with methanol, filtration, washing with hexane or ether; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; boron trifluoride diethyl etherate In tetrahydrofuran metallation of allyldiphenylamine with n-butyllithium in tetramethylethylenediamine at -10°C, transmetallation with (+)-B-methoxydiisopinocampheylborane and BF3*OEt2 at -78°C in THF; not isolated; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70.2% | Stage #1: (+)-B-methoxydiisocamphenylborane; allylmagnesium bromide In diethyl ether at -78 - 20℃; for 1.25h; Stage #2: 3-Benzyloxypropanal at -78 - 20℃; for 2h; Stage #3: With sodium hydroxide; dihydrogen peroxide In water for 1h; Heating / reflux; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (Z)-pent-2-ene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -78 - -50℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether at -78℃; | ||
Stage #1: (Z)-pent-2-ene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -50℃; for 0.0833333h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; for 0.333333h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (E)-pent-2-ene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -78℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; diethyl ether at -78℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at 0 - 25℃; for 1h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: (+)-B-methoxydiisocamphenylborane; allylmagnesium bromide In diethyl ether at -78 - 20℃; Inert atmosphere; Stage #2: methyl 6-deoxy-2,3,4-tri-O-benzyl-α-D-gluco-hepto-1,7-dialdopyranoside In diethyl ether at -78 - 20℃; Inert atmosphere; stereoselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: allyl(2-methoxyphenyl)dimethylsilane With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -45℃; for 2.33333h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; Inert atmosphere; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran; hexane at -78℃; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran at -78 - -45℃; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran at -78℃; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: dimethylsulfide borane complex / tetrahydrofuran / 20 °C / Inert atmosphere 2: tetrahydrofuran / 4 h / 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: trans-2-Butene With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78 - -50℃; for 0.5h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere; Stage #3: With boron trifluoride diethyl etherate In tetrahydrofuran; hexane for 0.5h; Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: potassium <i>tert</i>-butylate; n-butyllithium / tetrahydrofuran; hexane / 0.58 h / -78 - -42 °C / Inert atmosphere 1.2: 1 h / -78 °C / Inert atmosphere 1.3: -78 °C / Inert atmosphere 2.1: tetrahydrofuran; hexane; diethyl ether / 3 h / -78 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With n-butyllithium; potassium <i>tert</i>-butylate In tetrahydrofuran; hexane at -78℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methylallylether With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane Stage #3: (-)-2-methyl-3-oxopropyl benzoate Overall yield = 75 %; Overall yield = 1.12 g; Further stages; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 3-<<2-(trimethylsilyl)ethoxy>methoxy>-1-propene With sec.-butyllithium In tetrahydrofuran; cyclohexane at -78℃; for 0.25h; Inert atmosphere; Schlenk technique; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; cyclohexane at -78℃; for 1h; Inert atmosphere; Schlenk technique; Stage #3: 3,3-dimethyl acrylaldehyde In tetrahydrofuran; cyclohexane at -100 - 20℃; Inert atmosphere; Schlenk technique; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: Trimethyl-(2-methylselanylmethyl-allyl)-silane With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.0833333h; Inert atmosphere; Stage #2: (+)-B-methoxydiisocamphenylborane In tetrahydrofuran; hexane at -78℃; for 0.25h; Inert atmosphere; | Alcohol 4. To a solution of 6 (1.44g, 6.51 mmol) in THF (15 mL) at -78 °C was added nBuLi (4.4 mL,1.48 M in hexane, 6.5 mmol). After stirring for 5 min, a solution of (+)-Ipc2BOMe (2.05g, 6.48 mmol) in THF (4 mL) was add dropwise, and the stirring was continued for 15 min at the same temperature. To the resulting mixture was added a solution of 8 (0.52g, 2.15 mmol) in THF (3 mL), and the mixturewas stirred for 1.5 h. The reaction mixture was quenched with MeOH, and 3 M NaOH and 30% H2O2 were added at 0 °C. After stirring for 10 min, the resulting mixture was added aq. Na2SO3, and extracted with EtOAc. The organic layer was washed with brine. Concentration and chromatography (CH2Cl2/EtOAc, 50:1) gave 4 (699 mg, 88%) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In diethyl ether at -78 - 20℃; for 1.25h; |
A1003835[ 85134-98-1 ]
Methoxybis((1R,2S,3R,5R)-2,6,6-trimethylbicyclo[3.1.1]heptan-3-yl)borane
Reason: Optical isomers