Triethylamine → {3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile

HRID 571548ノート

反応式

HRID 571548 の反応式
[C:1]([CH2:3][C:4]1([N:15]2[CH:19]=[C:18]([B:20]3[O:24][C:23]([CH3:26])([CH3:25])[C:22]([CH3:28])([CH3:27])[O:21]3)[CH:17]=[N:16]2)[CH2:7][N:6](C(OC(C)(C)C)=O)[CH2:5]1)#[N:2].C(N(CC)CC)C>C(Cl)Cl.Cl.O1CCOCC1>[CH3:27][C:22]1([CH3:28])[C:23]([CH3:25])([CH3:26])[O:24][B:20]([C:18]2[CH:17]=[N:16][N:15]([C:4]3([CH2:3][C:1]#[N:2])[CH2:5][NH:6][CH2:7]3)[CH:19]=2)[O:21]1

参加物

6

反応物 2

HCID 8471TriethylamineHCID 67457197tert-butyl 3-(cyanomethyl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)azetidine-1-carboxylate

生成物 1

HCID 71143620{3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile収率 85%

試薬・触媒・溶媒 3

HCID 313Hydrochloric Acid溶媒HCID 6344Dichloromethane溶媒HCID 312751,4-Dioxane溶媒

実験手順

A mixture of tert-butyl 3-(cyanomethyl)-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidine-1-carboxylate (1.5 g, 3.9 mmol) (Example 40, Step 1) in methylene chloride (15 mL) and 4.0 M hydrogen chloride in dioxane (3.9 mL) was stirred at room temperature over weekend. The mixture was treated with triethylamine (1 mL), and the volatiles were removed under reduced pressure. The residue was purified by flash chromatography on a silica gel column with methanol in methylene chloride (0-5%) to afford the desired product (0.95 g, 85%). LCMS (M+H)+: m/z=289.2.

後処理

  1. customthe volatiles were removed under reduced pressure
  2. customThe residue was purified by flash chromatography on a silica gel column with methanol in methylene chloride (0-5%)

出典と根拠

ORDレコード
ord-87ff0e21117d48f588b3022fc8f50c27
出典データセット
uspto-grants-2015_05
特許番号
US09023840B2

反応ノート

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