Sodium borohydride → 2-((2,4-Dichlorobenzyl)(methyl)amino)-1-phenylethanol

Temperatur

0 °C

Into a 250 ml 3-necked roundbottom flask purged and maintained with an inert atmosphere of nitrogen, was placed a solution of 2-((2,4-dichlorobenzyl)(methyl)amino)-1-phenylethanone (4.3 g, 14.01 mmol, 1.00 equiv) in methanol (50 mL). This was followed by the addition of NaBH4 (1.5 g, 39.47 mmol, 2.82 equiv) in several batches at 0° C. The resulting solution was stirred for 30 min at 0° C. in a water/ice bath. The reaction was then quenched by the addition of 20 mL of acetone. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:80-1:20). This resulted in 3.4 g (79%) of the title compound as a white solid.

1. customInto a 250 ml 3-necked roundbottom flask purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. customThe reaction was then quenched by the addition of 20 mL of acetone
4. concentrationThe resulting mixture was concentrated under vacuum

ORD-Eintrag

ord-e0c6fab508634aa68debc573a7ce18fa

Quelldatensatz

uspto-grants-2013_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08541448B2