Acetic Acid → 3-azido-7-fluoro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one

HRID 2223089ノート

反応式

HRID 2223089 の反応式
C[Si]([N-][Si](C)(C)C)(C)C.[K+].[F:11][C:12]1[CH:13]=[CH:14][C:15]2[N:21]([CH3:22])[C:20](=[O:23])[CH2:19][N:18]=[C:17]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)[C:16]=2[CH:30]=1.CC(C1C=C(C(C)C)C(S([N:46]=[N+:47]=[N-:48])(=O)=O)=C(C(C)C)C=1)C.C(O)(=O)C>>[N:46]([CH:19]1[N:18]=[C:17]([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[C:16]2[CH:30]=[C:12]([F:11])[CH:13]=[CH:14][C:15]=2[N:21]([CH3:22])[C:20]1=[O:23])=[N+:47]=[N-:48]

参加物

5

反応物 4

HCID 176Acetic AcidHCID 3717072,4,6-Triisopropylbenzenesulfonyl azideHCID 3251421Potassium bis(trimethylsilyl)amideHCID 443661797-Fluoro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one

生成物 1

HCID 597138183-azido-7-fluoro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one収率 83%

実験手順

As illustrated in the scheme above and following General Procedure 6, KHMDS (1.34 mL of 0.5 M in toluene, 0.670 mmol), 7-fluoro-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one (0.171 g, 0.637 mmol), trisyl azide (0.493 g, 1.59 mmol) and acetic acid (0.16 mL, 2.8 mmol) were combined. After workup, purification of the crude product by silica gel column chromatography (100% CH2Cl2 to 9:1 CH2Cl2:EtOAc) provided the title compound as a pale yellow solid (0.163 g, 83%). 1H-NMR (CDCl3): δ 7.72-7.67 (m, 2H), 7.54-7.49 (m, 1H), 7.47-7.42 (m, 2H), 7.39 (dd, J=4.8 Hz, J=9.2 Hz, 1H), 7.36-7.30 (m, 1H), 7.08 (dd, J=2.8 Hz, J=8.4 Hz, 1H), 4.55 (s, 1H), 3.45 (s, 3H). MS (ESI) (M+H)+=310.

後処理

  1. customAfter workup, purification of the crude product by silica gel column chromatography (100% CH2Cl2 to 9:1 CH2Cl2:EtOAc)

出典と根拠

ORDレコード
ord-858e433fb765491c822889ef18941542
出典データセット
uspto-grants-2008_05
特許番号
US07375101B2

反応ノート

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