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4-Methoxybenzoyl isothiocyanate → tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate

HRID 1616705
ノート
印刷プレビュー

反応式

HRID 1616705 の反応式
[NH2:1][C:2]1[S:12][C:5]2[CH2:6][O:7][C:8]([CH3:11])([CH3:10])[CH2:9][C:4]=2[C:3]=1[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14].[CH3:20][O:21][C:22]1[CH:32]=[CH:31][C:25]([C:26]([N:28]=[C:29]=[S:30])=[O:27])=[CH:24][CH:23]=1>C1COCC1>[CH3:20][O:21][C:22]1[CH:23]=[CH:24][C:25]([C:26]([NH:28][C:29](=[S:30])[NH:1][C:2]2[S:12][C:5]3[CH2:6][O:7][C:8]([CH3:11])([CH3:10])[CH2:9][C:4]=3[C:3]=2[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[O:27])=[CH:31][CH:32]=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

4

反応物 2

HCID 1401364-Methoxybenzoyl isothiocyanateHCID 86731954tert-butyl 2-amino-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate

生成物 1

HCID 86731958tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate収率 78.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
50 °C

実験手順

A solution of tert-butyl 2-amino-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate (1.0 mL, 0.083 M, 0.083 mmol) in THF was added to a solution of 4-methoxybenzoyl isothiocyanate (51 mg, 0.26 mmol) in THF (1 mL) and heated at 50° C. for 16 hours, then cooled to room temperature. The solvent was removed and EtOH (2 mL) was added. The product was filtered and rinsed with EtOH (3×5 mL). tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate (31 mg, 0.065 mmol, 78% yield) was isolated as a white solid. 1H NMR (400 MHz, CDCl3) δ 14.65 (s, 1H), 8.98 (s, 1H), 7.83 (apparent d, J=8.9 Hz, 2H), 6.91 (apparent d, J=8.9 Hz, 2H), 4.66 (s, 2H), 3.81 (s, 3H), 2.69 (s, 2H), 1.56 (s, 9H), 1.24 (s, 6H). 13C NMR (101 MHz, CDCl3) 173.90, 164.52, 164.49, 163.88, 147.40, 129.93, 129.13, 124.58, 123.65, 118.03, 114.34, 82.36, 70.79, 59.81, 55.62, 38.25, 28.49, 26.48.

後処理

  1. temperaturecooled to room temperature
  2. customThe solvent was removed
  3. additionEtOH (2 mL) was added
  4. filtrationThe product was filtered
  5. washrinsed with EtOH (3×5 mL)

出典と根拠

ORDレコード
ord-b2ee471140cb46efa259490317787d22
出典データセット
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08765803B1

反応ノート

読み込み中…

このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート