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inquiry(2S,3R)-(+)-4-DIMETHYLAMINO-1,2-DIPHENYL-3-METHYL-2-BUTANOL
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inquiry(2RS,3SR)-4-dimethylamino-3-methyl-1,2-diphenyl-butan-2-ol
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With camphor-10-sulfonic acid |
dimethyl amine
p-toluenesulfonyl chloride
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
In dimethyl sulfoxide for 48h; Ambient temperature; |
formaldehyd
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With formic acid |
lithium aluminium tetrahydride
benzoylferrocene
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With hydrogenchloride; ammonium chloride In diethyl ether (Ar); soln. of Chirald in Et2O stirred at 0°C, added to soln. of LiAlH4 in ether, cooled to -70°C; dropwise addn. of ethereal soln. of Fe-complex at -70°C; treatment with wet ether and aq. NH4Cl;; ethereal ext. treated with 1 N HCl; crystn. (hexane); | 90% |
lithium aluminium tetrahydride
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With hydrogenchloride; ammonium chloride In diethyl ether (Ar); soln. of Chirald in Et2O stirred at 0°C added to soln. of LiAlH4 in ether cooled to -70°C; dropwise addn. of ethereal soln. of Ru-complex at -50°C; treatment with wet ether and aq. NH4Cl;; ethereal ext. treated with 1 N HCl; crystn. (hexane); | 90% |
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
binaphthol chlorophosphite
(1'S,2'R)-2-(1'-benzyl-3'-dimethylamino-2'-methyl-1'-phenyl-propoxy)dinaphtho[2,1-d:1',2'-f](1,3,2) dioxaphosphepine
Conditions | Yield |
---|---|
With triethylamine In toluene | 89% |
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With triethylamine In toluene | 87% |
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
1-dodecylbromide
(+)-(2R,3S)-N-(3-hydroxy-2-methyl-3,4-diphenylbutyl)-N,N-dimethyldodecan-1-ammonium bromide
Conditions | Yield |
---|---|
In acetonitrile for 240h; Reflux; | 65% |
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
benzyl chloride
Conditions | Yield |
---|---|
In ethanol for 18h; Heating; | 28% |
methyl 2-oxo-2-phenylacetate
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
lithium tetrabutylaluminate
α-butyl-α-hydroxy phenyl methyl ester
Conditions | Yield |
---|---|
With hydrogenchloride In hexane at 0℃; for 2h; asymmetric alkylation; various solvent; | |
With hydrogenchloride Multistep reaction; |
diazoacetic acid ethyl ester
dimethylmonochlorosilane
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With dirhodium tetraacetate; triethylamine 1.) CH2Cl2, room temperature, 2.) CH2Cl2, room temperature, 2 h; Yield given. Multistep reaction; |
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1.) Rh2(OAc)4, 2.) NEt3 / 1.) CH2Cl2, room temperature, 2.) CH2Cl2, room temperature, 2 h 2: hexamethyldisilazane, n-BuLi / hexane; tetrahydrofuran / 1.) -50 deg C, 2 h, 2.) -80 deg C, 2 h View Scheme |
lithium aluminium tetrahydride
1,1’-dibenzoylferrocene
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With ammonium chloride In diethyl ether (Ar); soln. of Chirald in Et2O stirred at 0°C added to soln. of LiAlH4 in ether cooled to -70°C; dropwise addn. of ethereal soln. of Fe-complex at -20°C; treatment with wet ether and aq. NH4Cl;; rapid chromy. (Al2O3, ether); crystn. (heptane); | >99 |
lithium aluminium tetrahydride
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
With hydrogenchloride; ammonium chloride In diethyl ether (Ar); soln. of Chirald in Et2O stirred at 0°C added to soln. of LiAlH4 in ether cooled to -70°C; dropwise addn. of ethereal soln. of Ru-complex at -20°C; treatment with wet ether and aq. NH4Cl; ethereal ext. treated with HCl;; crystn. (heptane or hexane); | >99 |
(2RS)-3,3,3-trifluoro-2-methylpropanoic acid
(2S,3R)-(+)-4-Dimethylamino-1,2-diphenyl-3-methyl-2-butanol
Conditions | Yield |
---|---|
In isopropyl alcohol at 20 - 70℃; | A n/a B n/a |
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