Triethylamine → 4-(5-Bromo-isoquinolin-6-yloxy)-piperidine-1-carboxylic acid tert-butyl ester

HRID 1887068ノート

反応式

HRID 1887068 の反応式
N(C(OCC)=O)=NC(OCC)=O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Br:32][C:33]1[C:42]([OH:43])=[CH:41][CH:40]=[C:39]2[C:34]=1[CH:35]=[CH:36][N:37]=[CH:38]2.[C:44]([N:51]1[CH2:56][CH2:55][CH:54](O)[CH2:53][CH2:52]1)([O:46][C:47]([CH3:50])([CH3:49])[CH3:48])=[O:45].C(N(CC)CC)C>ClCCl>[C:47]([O:46][C:44]([N:51]1[CH2:56][CH2:55][CH:54]([O:43][C:42]2[C:33]([Br:32])=[C:34]3[C:39](=[CH:40][CH:41]=2)[CH:38]=[N:37][CH:36]=[CH:35]3)[CH2:53][CH2:52]1)=[O:45])([CH3:50])([CH3:48])[CH3:49]

参加物

7

反応物 5

HCID 8471TriethylamineHCID 11776Triphenylphosphine2 回HCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 643502Tert-butyl 4-hydroxypiperidine-1-carboxylateHCID 1360928955-Bromo-6-isoquinolinol

生成物 1

HCID 576469744-(5-Bromo-isoquinolin-6-yloxy)-piperidine-1-carboxylic acid tert-butyl ester収率 60%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

3.75 mL (4.15 g, 23.8 mmol) of diethyl azo dicarboxylate were added to 12.7 g (19.9 mmol) of polymer-bound triphenylphosphine (PS—PPh3, approx. 1.6 mmol/g, Argonaut) in 250 mL of dichloromethane at 0° C. and stirred for 15 min. 4.45 g (19.9 mmol) 5-bromo isoquinoline-6-ol (9), 4.0 g (19.9 mmol) Boc-(4-hydroxy)piperidine and 4.1 mL (3.0 g, 29.8 mmol) triethyl amine were added. The mixture was shaken for 16 h. The polymer was removed by filtration through Celite and the solvents were distilled off. 20 mL dichloromethane were added and the precipitate was isolated by filtration. The crude product (8 g) was purified by flash chromatography using ethyl acetate/n-heptane as eluent to give 4.78 g (60%) of compound 11.

後処理

  1. stirringThe mixture was shaken for 16 h
  2. customThe polymer was removed by filtration through Celite
  3. distillationthe solvents were distilled off
  4. addition20 mL dichloromethane were added
  5. customthe precipitate was isolated by filtration
  6. customThe crude product (8 g) was purified by flash chromatography

出典と根拠

ORDレコード
ord-0ee76063be824d758c65e0de94648d44
出典データセット
uspto-grants-2013_08
特許番号
US08501736B2

反応ノート

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