Acetic Acid → HCID 69322926, compound

HRID 1350155Notes

Reaction equation

[CH:1]([O:4][C:5]1[CH:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[C:12]2[C:7](=[CH:8][CH:9]=[C:10]3[NH:22][C@H:21]([CH:23]([CH3:25])[CH3:24])[CH2:20][O:19][C:11]3=2)[N:6]=1)([CH3:3])[CH3:2].[BH4-].[Na+].[C:28](O)(=O)[CH3:29]>>[CH2:28]([N:22]1[C:10]2[C:11](=[C:12]3[C:7](=[CH:8][CH:9]=2)[N:6]=[C:5]([O:4][CH:1]([CH3:3])[CH3:2])[CH:14]=[C:13]3[C:15]([F:18])([F:17])[F:16])[O:19][CH2:20][C@H:21]1[CH:23]([CH3:25])[CH3:24])[CH3:29]

Participants

Reactant 3

HCID 176Acetic Acid

HCID 4311764Sodium borohydride

HCID 69318169HCID 69318169, compound

Product 1

HCID 69322926HCID 69322926, compoundYield 60%

Procedure

Compound 122 was prepared according to General Method 5 (EXAMPLE 2) from (3R)-3,4-dihydro-8-isopropoxy-3-isopropyl-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline (50 mg, 0.14 mmol) and NaBH4 pellets (>10 equiv) in 2 mL acetic acid to afford 30 mg (ca. 60%) of (3R)-4-ethyl-3,4-dihydro-8-isopropoxy-3-isopropyl-10-(trifluoromethyl)-2H-[1,4]oxazino[2,3-f]quinoline. This material (30 mg, 0.08 mmol) was carried on according to General Method 4 (EXAMPLE 1) by treatment with 4 mL of 1:1 acetic acid:concentrated HCl (0.02M) heated at 90° C. for 4 h to afford 15 mg (57%) of Compound 122, a yellow solid, after column chromatography (3:1 hexanes:EtOAc to 1:1 hexanes:EtOAc, gradient elution). 1H NMR (500 MHz, CDCl3) δ 11.87 (bs, 1H), 7.13 (d, J=9.3, 1H), 7.12 (s, 1H), 6.96 (d, J=8.9, 1H), 4.49 (d, J=10.8, 1H), 3.69 (dd, J=10.7, 2.7, 1H), 3.49 (m, 1H), 3.24 (m, 1H), 2.88 (bd, J=7.9, 1H) 1.83 (m, 1H), 1.64 (t, J=7.1, 3H), 0.98 (d, J=10.6, 3H), 0.96 (d, J=10.6, 3H).

Sources & evidence

ORD record: ord-024138d77a104f80b10bae32440786a3
Source dataset: uspto-grants-2007_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07214690B2

Reaction notes

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