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Potassium Phosphate, Tribasic → (S)-7-(2-fluoropyridin-3-yl)-3-(neopentyloxy)-2',6'-dihydrospiro[chromeno[2,3-c]pyridine-5,3'-[1,4]oxazin]-5'-amine

HRID 455636
ノート
印刷プレビュー

反応式

HRID 455636 の反応式
Br[C:2]1[CH:3]=[C:4]2[C@:15]3([N:20]=[C:19]([NH2:21])[CH2:18][O:17][CH2:16]3)[C:14]3[CH:13]=[C:12]([O:22][CH2:23][C:24]([CH3:27])([CH3:26])[CH3:25])[N:11]=[CH:10][C:9]=3[O:8][C:5]2=[CH:6][CH:7]=1.[F:28][C:29]1[C:34](B(O)O)=[CH:33][CH:32]=[CH:31][N:30]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>>[F:28][C:29]1[C:34]([C:2]2[CH:3]=[C:4]3[C@:15]4([N:20]=[C:19]([NH2:21])[CH2:18][O:17][CH2:16]4)[C:14]4[CH:13]=[C:12]([O:22][CH2:23][C:24]([CH3:27])([CH3:26])[CH3:25])[N:11]=[CH:10][C:9]=4[O:8][C:5]3=[CH:6][CH:7]=2)=[CH:33][CH:32]=[CH:31][N:30]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

4

反応物 3

HCID 62657Potassium Phosphate, TribasicHCID 27832702-Fluoropyridine-3-boronic acidHCID 67440039(S)-7-bromo-3-(neopentyloxy)-2',6'-dihydrospiro[chromeno[2,3-c]pyridine-5,3'-[1,4]oxazin]-5'-amine

生成物 1

HCID 58465922(S)-7-(2-fluoropyridin-3-yl)-3-(neopentyloxy)-2',6'-dihydrospiro[chromeno[2,3-c]pyridine-5,3'-[1,4]oxazin]-5'-amine収率 87.4%

反応条件

温度
90 °C

実験手順

A vial was charged with (S)-7-bromo-3-(neopentyloxy)-2′,6′-dihydrospiro[chromeno[2,3-c]pyridine-5,3′-[1,4]oxazin]-5′-amine (51 mg, 0.118 mmol), 2-fluoropyridin-3-ylboronic acid (33.2 mg, 0.236 mmol), potassium phosphate (75 mg, 0.354 mmol), and bis[di-tert-butyl(4-dimethylaminophenyl)phosphine]dichloropalladium(II) (4.18 mg, 5.90 μmol). The vial was flushed with Ar (g), then dioxane (442 μL) and water (147 μL) were added in sequence. The vial was sealed and heated in a Biotage Initiator microwave reactor for 20 min at 90° C. The mixture was extracted with EtOAc (3×), and the combined organic extracts were concentrated. The residue was purified by chromatography (30% of a 90:10:1 mixture of DCM/MeOH/NH4OH in DCM) to give (S)-7-(2-fluoropyridin-3-yl)-3-(neopentyloxy)-2′,6′-dihydrospiro[chromeno[2,3-c]pyridine-5,3′-[1,4]oxazin]-5′-amine (46.23 mg) as an off-white solid. MS m/z=449.2 [M+H]+.

後処理

  1. customThe vial was flushed with Ar (g)
  2. additiondioxane (442 μL) and water (147 μL) were added in sequence
  3. customThe vial was sealed
  4. extractionThe mixture was extracted with EtOAc (3×)
  5. concentrationthe combined organic extracts were concentrated
  6. customThe residue was purified by chromatography (
  7. addition30% of a 90:10:1 mixture of DCM/MeOH/NH4OH in DCM)

出典と根拠

ORDレコード
ord-337ad42233d34bea8be592ec232dce05
出典データセット
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08497264B2

反応ノート

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