1,8-Diazabicyclo(5.4.0)undec-7-ene → HCID 86732225, compound

HRID 930393Notes

Reaction equation

[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[CH:4][C:3]=1[C@:9]1([CH2:28][F:29])[CH2:14][C@@H:13]([C:15]([F:18])([F:17])[F:16])[O:12][C:11]([NH:19]C(=O)C2C=CC=CC=2)=[N:10]1.N12CCCN=C1CCCCC2>CO>[F:1][C:2]1[C:7]([F:8])=[CH:6][CH:5]=[CH:4][C:3]=1[C@:9]1([CH2:28][F:29])[CH2:14][C@@H:13]([C:15]([F:16])([F:17])[F:18])[O:12][C:11]([NH2:19])=[N:10]1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of N-((4S,6S)-4-(2,3-difluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-yl)benzamide (2.2 g, 5.28 mmol) in MeOH (25 mL) was added 1,8-diazabicyclo-[5.4.0]undec-7-ene (0.947 mL, 6.34 mmol) The mixture was heated in a 60° C. oil bath for 22 h. The mixture was concentrated under reduced pressure and the residue was partitioned between EtOAc and water. The separated organic layer was washed with brine, dried over Na2SO4 and filtered. The filtrate was concentrated and purified by silica gel column (0-40% EtOAc/hexane) to afford (4S,6S)-4-(2,3-difluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine (1.62 g, 5.19 mmol, 98% yield) as light yellow solid. MS m/z=313.1 [M+H]+. Calculated for C12H10F6N20: 312.2

Workup

concentrationThe mixture was concentrated under reduced pressure
customthe residue was partitioned between EtOAc and water
washThe separated organic layer was washed with brine
dry with materialdried over Na2SO4
filtrationfiltered
concentrationThe filtrate was concentrated
custompurified by silica gel column (0-40% EtOAc/hexane)

Sources & evidence

ORD record: ord-93a429c0897b413291da356154b29046
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296734B2

Reaction notes

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