Triethylamine → Carbonic acid 1,8-bis-dimethylamino-2-oxo-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-4-yl ester ethyl ester

HRID 44136ノート

反応式

HRID 44136 の反応式
[CH3:1][N:2]([CH3:27])[N:3]1[C:7]2([CH2:12][CH2:11][N:10]([N:13]([CH3:15])[CH3:14])[CH2:9][CH2:8]2)[C:6](=[O:16])[CH:5]([C:17]2[C:22]([CH3:23])=[CH:21][C:20]([CH3:24])=[CH:19][C:18]=2[CH3:25])[C:4]1=[O:26].C(N(CC)CC)C.Cl[C:36]([O:38][CH2:39][CH3:40])=[O:37]>O1CCCC1>[CH2:39]([O:38][C:36](=[O:37])[O:16][C:6]1[C:7]2([CH2:12][CH2:11][N:10]([N:13]([CH3:14])[CH3:15])[CH2:9][CH2:8]2)[N:3]([N:2]([CH3:1])[CH3:27])[C:4](=[O:26])[C:5]=1[C:17]1[C:22]([CH3:23])=[CH:21][C:20]([CH3:24])=[CH:19][C:18]=1[CH3:25])[CH3:40]

参加物

5

反応物 3

HCID 8471TriethylamineHCID 10928Ethyl chloroformateHCID 682286451,8-Bis-dimethylamino-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]decane-2,4-dione

生成物 1

HCID 68228258Carbonic acid 1,8-bis-dimethylamino-2-oxo-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-4-yl ester ethyl ester収率 81%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
0 °C

実験手順

150 mg 1,8-Bis-dimethylamino-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]decane-2,4-dione (PREPARATION EXAMPLE 1) is dissolved in 3 ml tetrahydrofuran, 75 mg triethylamine is added, and the mixture is cooled to 0° C. 44 mg ethyl chloroformate is added and the resulting suspension stirred for 3 hours, thereby warming to room temperature. Then the mixture is partitioned between water and ethyl acetate, the organic layer separated and washed with brine, dried over anhydrous sodium sulfate, and evaporated. The residue is purified by chromatography on silica gel with ethyl acetate/heptane (1:1) as a solvent. Thus, 145 mg Carbonic acid 1,8-bis-dimethylamino-2-oxo-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-4-yl ester ethyl ester is obtained as a solid, mp 105° C. 1H-NMR (CDCl3): 6.83 ppm (s, 2H), 4.02 ppm (q, 2H), 3.05 ppm (m, 2H), 2.94 ppm (s, 6H), 2.80 ppm (m, 2H), 2.43 ppm (s, 6H), 2.40 ppm (m, 2H), 2.23 ppm (s, 3H), 2.17 ppm (s, 6H), 1.86 ppm (m, 2H), 1.08 ppm (t, 3H).

後処理

  1. temperaturewarming to room temperature
  2. customThen the mixture is partitioned between water and ethyl acetate
  3. customthe organic layer separated
  4. washwashed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customevaporated
  7. customThe residue is purified by chromatography on silica gel with ethyl acetate/heptane (1:1) as a solvent

出典と根拠

ORDレコード
ord-42a0a72d026b4f8f8fc5d557b54924f3
出典データセット
uspto-grants-2013_09
特許番号
US08541343B2

反応ノート

読み込み中…