2-(4-BROMOPHENYL)-2-METHYLPROPANE-1,3-DIOL synthesis
- Product Name:2-(4-BROMOPHENYL)-2-METHYLPROPANE-1,3-DIOL
- CAS Number:66810-01-3
- Molecular formula:C10H13BrO2
- Molecular Weight:245.11
872882-98-9
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66810-01-3
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Yield:66810-01-3 79%
Reaction Conditions:
Stage #1: diethyl 2-(4-bromophenyl)-2-methylmalonatewith lithium aluminium tetrahydride in tetrahydrofuran at 0; for 2 h;
Stage #2: with hydrogenchloride in water;
Steps:
46.c
To a solution of diethyl 2-(4-bromophenyl)-2-methylmalonate (850 mg, 2.6 mmol) in dry THF (5 mL) at 0° C. was added a 1.0M solution of lithium aluminum hydride in THF (2.6 mL, 2.6 mmol). After stirring for 2 h at 0° C., the mixture was quenched by slow addition of water (5 mL). The mixture was made acidic by addition of 1N HCl and was then extracted with dichloromethane (2*20 mL). The organics were combined, dried over Na2SO4 and evaporated to give 2-(4-bromophenyl)-2-methylpropane-1,3-diol (500 mg, 79%) 1H NMR (400 MHz, DMSO-d6) δ 7.47-7.43 (m, 2H), 7.35-7.32 (m, 2H), 4.59-4.55 (m, 2H), 3.56-3.51 (m, 4H), 1.17 (s, 3H).
References:
US2008/9524,2008,A1 Location in patent:Page/Page column 408; 409
93139-85-6
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66810-01-3
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66810-01-3
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66810-01-3
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