Sodium Carbonate → 4-[5-(2-Triisopropylsilanyl-oxazol-5-yl)-furo[2,3-c]pyridin-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1471767ノート

反応式

HRID 1471767 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[O:23][C:17]3=[CH:18][N:19]=[C:20](Cl)[CH:21]=[C:16]3[CH:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CC1(C)C(C)(C)OB([C:32]2[O:36][C:35]([Si:37]([CH:44]([CH3:46])[CH3:45])([CH:41]([CH3:43])[CH3:42])[CH:38]([CH3:40])[CH3:39])=[N:34][CH:33]=2)O1.C([O-])([O-])=O.[Na+].[Na+]>CN(C)C=O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[O:23][C:17]3=[CH:18][N:19]=[C:20]([C:32]4[O:36][C:35]([Si:37]([CH:41]([CH3:43])[CH3:42])([CH:44]([CH3:46])[CH3:45])[CH:38]([CH3:39])[CH3:40])=[N:34][CH:33]=4)[CH:21]=[C:16]3[CH:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

参加物

5

反応物 3

HCID 10340Sodium CarbonateHCID 442243115-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(tris(propan-2-yl)silyl)-1,3-oxazoleHCID 866748894-(5-Chlorofuro[2,3-c]pyridin-2-yl)piperidine-1-carboxylic acid tert-butyl ester

生成物 1

HCID 866945744-[5-(2-Triisopropylsilanyl-oxazol-5-yl)-furo[2,3-c]pyridin-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

A mixture of 4-(5-chloro-furo[2,3-c]pyridin-2-yl)-piperidine-1-carboxylic acid tert-butyl ester (0.20 g), 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-2-triisopropylsilanyl-oxazole (0.35 g), 2 M aqueous Na2CO3 solution (0.8 mL), and N,N-dimethylformamide (3 mL) is sparged with argon for 10 min. PdCl2[1,1′-bis(diphenylphosphino)-ferrocene]*CH2Cl2 complex (0.15 g) is added and the mixture is stirred at 80° C. overnight. The mixture is concentrated, diluted with water and methanol, and purified by HPLC on reversed phase (methanol/water) to give the title compound. LC (method 4): tR=2.07 min; Mass spectrum (ESI+): m/z=526 [m+H]+.

後処理

  1. customis sparged with argon for 10 min
  2. additionis added
  3. concentrationThe mixture is concentrated
  4. additiondiluted with water and methanol
  5. custompurified by HPLC on reversed phase (methanol/water)

出典と根拠

ORDレコード
ord-edca3ff98fb44721a5bbd93004f631ce
出典データセット
uspto-grants-2015_04
特許番号
US09012456B2

反応ノート

読み込み中…