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Diisopropylethylamine → Methyl 3-[5-bromo-3-{[(1R,2R)-3-hydroxy-2-methyl-1-phenylpropyl]amino}-2-oxopyrazin-1(2H)-yl]-5-fluoro-4-methylbenzoate

HRID 337163
ノート
印刷プレビュー

反応式

HRID 337163 の反応式
Br[C:2]1[C:3](=[O:21])[N:4]([C:9]2[CH:10]=[C:11]([CH:16]=[C:17]([F:20])[C:18]=2[CH3:19])[C:12]([O:14][CH3:15])=[O:13])[CH:5]=[C:6]([Br:8])[N:7]=1.[NH2:22][C@@H:23]([C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[C@@H:24]([CH3:27])[CH2:25][OH:26].CCN(C(C)C)C(C)C>C1COCC1.C(OCC)(=O)C>[Br:8][C:6]1[N:7]=[C:2]([NH:22][C@@H:23]([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[C@@H:24]([CH3:27])[CH2:25][OH:26])[C:3](=[O:21])[N:4]([C:9]2[CH:10]=[C:11]([CH:16]=[C:17]([F:20])[C:18]=2[CH3:19])[C:12]([O:14][CH3:15])=[O:13])[CH:5]=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

6

反応物 3

HCID 81531DiisopropylethylamineHCID 12452700(2R,3R)-3-Amino-2-methyl-3-phenylpropan-1-olHCID 66689945methyl 3-(3,5-dibromo-2-oxo-1(2H)-pyrazinyl)-5-fluoro-4-methylbenzoate

生成物 1

HCID 66690053Methyl 3-[5-bromo-3-{[(1R,2R)-3-hydroxy-2-methyl-1-phenylpropyl]amino}-2-oxopyrazin-1(2H)-yl]-5-fluoro-4-methylbenzoate

試薬・触媒・溶媒 2

HCID 8028
Tetrahydrofuran
溶媒
HCID 8857Ethyl Acetate溶媒

反応条件

温度
50 °C

実験手順

To methyl 3-(3,5-dibromo-2-oxopyrazin-1(2H)-yl)-5-fluoro-4-methylbenzoate (Example 252g, 0.9 g) in THF (3 mL) was added (2R,3R)-3-amino-2-methyl-3-phenylpropan-1-ol (Example 328a, 0.389 g) and Hunig's Base (0.374 mL) and the reaction stirred at 50° C. for 8 h. The reaction mixture was diluted with ethyl acetate and washed with aqueous NaHCO3. The organics were dried (MgSO4) and concentrated in vacuo to leave the crude product which was triturated overnight in 2:1 isohexane/diethyl ether to give the subtitle compound. Purification of the filtrate (SiO2 chromatography eluting with 50-100% diethyl ether in isohexane) to give further subtitle compound (total 0.820 g).

後処理

  1. washwashed with aqueous NaHCO3
  2. dry with materialThe organics were dried (MgSO4)
  3. concentrationconcentrated in vacuo
  4. customto leave the crude product which
  5. customwas triturated overnight in 2:1 isohexane/diethyl ether

出典と根拠

ORDレコード
ord-79d9149b3c9e4c1e9a605f43826e81f2
出典データセット
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08889692B2

反応ノート

読み込み中…

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