Triphenylphosphine → trans-Tert-butyl 4-(5-chloro-1-(4-cyano-3-fluorophenyl)-2-oxo-1,2-dihydropyridin-4-yloxy)-3-methylpiperidine-1-carboxylate

HRID 386588ノート

反応式

HRID 386588 の反応式
[Cl:1][C:2]1[C:3]([OH:18])=[CH:4][C:5](=[O:17])[N:6]([C:8]2[CH:15]=[CH:14][C:11]([C:12]#[N:13])=[C:10]([F:16])[CH:9]=2)[CH:7]=1.O[CH:20]1[CH2:25][CH2:24][N:23]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:22][CH:21]1[CH3:33].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[Cl:1][C:2]1[C:3]([O:18][C@@H:20]2[CH2:25][CH2:24][N:23]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:22][C@H:21]2[CH3:33])=[CH:4][C:5](=[O:17])[N:6]([C:8]2[CH:15]=[CH:14][C:11]([C:12]#[N:13])=[C:10]([F:16])[CH:9]=2)[CH:7]=1

参加物

6

反応物 4

HCID 11776TriphenylphosphineHCID 5462977Diethyl azodicarboxylateHCID 513584911,1-Dimethylethyl 4-hydroxy-3-methyl-1-piperidinecarboxylateHCID 673665324-(5-chloro-4-hydroxy-2-oxopyridin-1(2H)-yl)-2-fluorobenzonitrile

生成物 1

HCID 131730204trans-Tert-butyl 4-(5-chloro-1-(4-cyano-3-fluorophenyl)-2-oxo-1,2-dihydropyridin-4-yloxy)-3-methylpiperidine-1-carboxylate収率 54.5%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a mixture of 4-(5-chloro-4-hydroxy-2-oxopyridin-1(2H)-yl)-2-fluorobenzonitrile (193 mg, 0.729 mmol), tert-butyl 4-hydroxy-3-methylpiperidine-1-carboxylate (173 mg, 0.802 mmol) and triphenylphosphine (230 mg, 0.875 mmol) in THF (2.0 mL) was added DEAD (0.129 mL, 0.875 mmol). The resulting mixture was stirred at room temperature overnight and then evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel (0-100% EtOAc/hexane) to yield trans-tert-butyl 4-(5-chloro-1-(4-cyano-3-fluorophenyl)-2-oxo-1,2-dihydropyridin-4-yloxy)-3-methylpiperidine-1-carboxylate (183.5 mg, 50.1%) as an orange solid. 1H NMR (400 MHz, DMSO): 6 ppm 7.99-8.15 (m, 2H), 7.80 (dd, J=10.55, 1.76 Hz, 1H), 7.55 (dd, J=8.35, 1.76 Hz, 1H), 6.21 (s, 1H), 4.67-4.84 (m, 1H), 3.52 (app br s, 2H), 3.18 (app br s, 2H), 1.99 (app br s, 1H), 1.82 (app br s, 1H), 1.62-1.73 (m, 1H), 1.40 (s, 9H), 0.90 (d, J=7.03 Hz, 3H). MS (ESI) 406 (M−56+H).

後処理

  1. customevaporated under reduced pressure
  2. customThe residue was purified by flash chromatography on silica gel (0-100% EtOAc/hexane)

出典と根拠

ORDレコード
ord-a1f406155a3d4382b67bee4954c42080
出典データセット
uspto-grants-2013_02
特許番号
US08372837B2

反応ノート

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