3,5-Bis(trifluoromethyl)benzaldehyde → (S)-tert-butyl 5-(3,5-bistrifluoromethylbenzylamino)-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate

Add 3,5-bistrifluoromethylbenzaldehyde (909 mg, 3.75 mmol) to a solution of (S)-tert-butyl 5-amino-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate (1.29 g, 3.75 mmol) in methanol (20 mL) at room temperature under nitrogen and stir for 2 h. Add sodium borohydride (283 mg, 7.5 mmol) and stir the mixture for 2 h. Remove the solvents under reduced pressure and dilute the residue with dichloromethane (50 mL) and water (50 mL). Collect the organic layer and extract the aqueous layer with dichloromethane (3×30 mL). Wash the combined organic extracts with water (20 mL) and brine (20 mL) and dry over anhydrous sodium sulfate. Filter and remove the solvents under reduced pressure to provide the title compound as an amber oil (2.09 g, 98%), which is used in the next step without purification. APCI MS m/z 570 (M+H)+.

1. customRemove the solvents under reduced pressure
2. additiondilute the residue with dichloromethane (50 mL) and water (50 mL)
3. customCollect the organic layer
4. extractionextract the aqueous layer with dichloromethane (3×30 mL)
5. washWash the combined organic extracts with water (20 mL) and brine (20 mL)
6. dry with materialdry over anhydrous sodium sulfate
7. filtrationFilter
8. customremove the solvents under reduced pressure

ORD-Eintrag

ord-cfb940a52ba84f09ac3348de9cd58668

Quelldatensatz

uspto-grants-2010_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07786108B2