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ChemicalBook CAS DataBase List (2,5-DICHLORO-4-PYRIDINYL)METHANOL
866039-42-1

(2,5-DICHLORO-4-PYRIDINYL)METHANOL synthesis

2synthesis methods
88912-26-9 Synthesis
2,5-Dichloroisonicotinic acid

88912-26-9
234 suppliers
$6.00/1g

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Yield:866039-42-1 81%

Reaction Conditions:

with borane-THF in tetrahydrofuran at 0 - 20; for 2.5 h;

Steps:

184.1 Step 1: Preparation of (2,5-dichloropyridin-4-yl)methanol

A solution of 2,5-dichloropyridine-4-carboxylic acid (2.00 g, 10.417 mmol, 1.0 equiv) and BH3-THF (30 mL, 3.0 equiv, 1 mol/L in THF) in tetrahydrofuran (100 mL) was stuffed for 30 mm at 0°C and 2 h at room temperature. The reaction was then quenched by water, extracted ethyl acetate, washed with brine and concentrated under vacuum. The residue was purified by a silica gel column eluting with ethyl acetate/petroleum ether (1:3) to afford the title compound (1.5 g, 81%) as a white solid.

References:

WO2015/52264,2015,A1 Location in patent:Paragraph 01981; 01982