Methanol → 2-(5,6,7,8-Tetrahydro-1-naphthylamino)-2-oxazoline

HRID 1656006

反応式

HRID 1656006 の反応式
Cl[CH2:2][CH2:3][N:4]=[C:5]=[O:6].[C:7]1([NH2:17])[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][C:11]=2[CH:10]=[CH:9][CH:8]=1.ClCCNC(N)=O.CO>O1CCCC1.O>[C:7]1([NH:17][C:5]2[O:6][CH2:2][CH2:3][N:4]=2)[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][C:11]=2[CH:10]=[CH:9][CH:8]=1

参加物

7

反応物 4

HCID 887MethanolHCID 160352-Chloroethyl isocyanate2 回HCID 166715-TetralinylamineHCID 240817N-(2-Chloroethyl)urea

生成物 1

HCID 988172-(5,6,7,8-Tetrahydro-1-naphthylamino)-2-oxazoline

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

Chloroethylisocyanate (Compound 5 210 mg, 2.05 mmol) was added to a stirred solution at 5,6,7,8-tetrahydro-1-naphthylamine (302 mg, 2.05 mmol) in tetrahydrofuran (2 ml). After 30 minutes the resulting chloroethylurea was collected by vacuum filtration. Yield: 302 mg (58%) of fine white crystals: mp 101°-103°; 1H NMR (300 MHz, CDCl3) & 6.98-7.30 (m, 3H); 6.08 (br s, 1H); 5.19 (br s, 1H); 3.68 (m, 2H); 3.55 (m, 2H); 2.79 (m, 2H); 2.61 (m, 2H); 1.80 (m, 4H); Mass spectrum m/e 252.1034 (C13H17ClN2O requires 252.1029). The chloroethyl urea (237 mg, 0.94 mmol) was suspended in H2O (3 ml) and CH3OH (3 ml) and heated to reflux for 18 hours. The reaction mixture was cooled to room temperature and worked up as above to yield after recrystallization (hexane/CHCl3) 187.6 mg (87%) of the title compound: mp 160°-162° C.; 1H NMR (300 MHz, CDCl3) & 7.23 (m, 1H); 7.08 (m, 1H; 6.75 (m, 1H); 5.55 (br, 1H); 4.35 (t, 2H); 3.70 (t, 2H); 2.70 (m, 2H); 2.58 (m, 2H); 1.80 (m, 4H); Mass spectrum m/e 216.1257 (C13H16N2O requires 216.1262).

後処理

  1. filtrationAfter 30 minutes the resulting chloroethylurea was collected by vacuum filtration
  2. temperatureto reflux for 18 hours
  3. customto yield
  4. customafter recrystallization (hexane/CHCl3) 187.6 mg (87%) of the title compound

出典と根拠

ORDレコード
ord-6243f707ab3f47de8cf058f737fcdf90
出典データセット
uspto-grants-1993_10
特許番号
US05252595

関連ノート

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