Reaktion #2962

Reaktionsgleichung

(±)-trans-2-diethylaminocarbonyl-3,7-dimethyl-4a-(3-methoxyphenyl)-4,4a,5,6,7,8,8a,9-octahydro-1H-pyrrolo[3,2-g]isoquinoline

boron tribromide

→

title compound

Ausbeute 49.9%

(±)-trans-2-Diethylaminocarbonyl-3,7-dimethyl-4a-(3-hydroxyphenyl)-4,4a,5,6,7,8,8a,9-octahydro-1H-pyrrolo[3,2-g]isoquinoline

Ausbeute 49.9%

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe residue was purified by flash chromatography (CH2Cl2 /MeOH/conc. NH4OH 80:12:0.8)
2. 2
   SonstigeThe crude product was triturated with a mixture of acetone/MeOH=3:2

Vorschrift

0.29 g (0.71 mmol) of (±)-trans-2-diethylaminocarbonyl-3,7-dimethyl-4a-(3-methoxyphenyl)-4,4a,5,6,7,8,8a,9-octahydro-1H-pyrrolo[3,2-g]isoquinoline were treated with 0.4 ml (4.26 mmol) of boron tribromide as described in example 2. The residue was purified by flash chromatography (CH2Cl2 /MeOH/conc. NH4OH 80:12:0.8). The crude product was triturated with a mixture of acetone/MeOH=3:2, yielding 0.14 g of the title compound. M.p.=235°-238 l ° C.

Quelle