Sodium cyanoborohydride → 6-[({1-[2-(6-Fluoro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)ethyl]piperidin-4-yl}amino)methyl]-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one

HRID 255209Notes

Reaction equation

HRID 255209 reaction equation
[NH2:1][CH:2]1[CH2:7][CH2:6][N:5]([CH2:8][CH2:9][N:10]2[C:15]3[CH:16]=[C:17]([F:20])[CH:18]=[CH:19][C:14]=3[O:13][CH2:12][C:11]2=[O:21])[CH2:4][CH2:3]1.[O:22]=[C:23]1[CH2:28][O:27][C:26]2[CH:29]=[CH:30][C:31]([CH:33]=O)=[N:32][C:25]=2[NH:24]1.C([BH3-])#N.[Na+]>>[F:20][C:17]1[CH:18]=[CH:19][C:14]2[O:13][CH2:12][C:11](=[O:21])[N:10]([CH2:9][CH2:8][N:5]3[CH2:4][CH2:3][CH:2]([NH:1][CH2:33][C:31]4[CH:30]=[CH:29][C:26]5[O:27][CH2:28][C:23](=[O:22])[NH:24][C:25]=5[N:32]=4)[CH2:7][CH2:6]3)[C:15]=2[CH:16]=1

Participants

4

Reactant 3

HCID 5003444Sodium cyanoborohydrideHCID 218737373-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehydeHCID 667743534-[2-(4-Aminopiperidin-1-yl)ethyl]-6-fluoro-2H-1,4-benzoxazin-3(4H)-one2×

Product 1

HCID 159835536-[({1-[2-(6-Fluoro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)ethyl]piperidin-4-yl}amino)methyl]-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-oneYield 16%

Procedure

4-[2-(4-Aminopiperidin-1-yl)ethyl]-6-fluoro-2H-1,4-benzoxazin-3(4H)-one (Intermediate 54), (0.7 mmol), 3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehyde (WO 2004/058144) (150 mg, 0.84 mmol) and sodium cyanoborohydride (90 mg, 1.4 mmol) were reacted as described under Example 21 to give 51 mg (16%) product as a solid.

Sources & evidence

ORD record
ord-5cd0ea2a26394576994ede5d6e098649
Source dataset
uspto-grants-2011_01
Patent number
US07875715B2

Reaction notes

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