6-Bromo-3-isopropoxy-2-methylpyridine synthesis
- Product Name:6-Bromo-3-isopropoxy-2-methylpyridine
- CAS Number:1392466-94-2
- Molecular formula:C9H12BrNO
- Molecular Weight:230.1
118399-86-3
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Yield:1392466-94-2 85%
Reaction Conditions:
with potassium carbonate in N,N-dimethyl-formamide at 100;
Steps:
Step 3: 6-Bromo-3-isopropoxy-2-methylpyridine[00397] 6-Bromo-2-methylpyridin-3-ol (10.5 g, 55.9 mmol) was dissolved in DMF (100 mL). K2C03 (19.3 g, 139.6 mmol) and 2-bromopropane (13.1 ml, 139.6 mmol) were added to the solution and the mixture was heated at 100 °C overnight. The mixture was poured into a mixture of water and EtOAc (200 mL). The layers were separated and the aqueous layer was extracted with EtOAc (2x). The combined organic layers were dried(Na2S04) and concentrated. The crude oil was purified by column chromatography (0-20% ethyl acetate/heptanes) to give 6-bromo-3-isopropoxy-2-methylpyridine (10.9 g, 85) as a yellow oil. 1H- MR (300 MHz, CDC13) 1.42 (d, 6H), 2.48 (s, 3H), 4.65 (m, 1H), 7.20 (d, 1H), 8.04 (d, 1H).
References:
WO2012/112743,2012,A1 Location in patent:Page/Page column 154
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1392466-94-2
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