Dimethylformamide → 2,6-Dimethoxynaphthalene

HRID 575496

반응식

HRID 575496 반응식
[CH:1]1[C:10]2[C:5](=[CH:6][C:7]([OH:11])=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1O.[H-].[Na+].S([O:20][CH3:21])(OC)(=O)=O.[CH3:22]N(C=O)C>>[CH3:22][O:11][C:7]1[CH:8]=[CH:9][C:10]2[C:5](=[CH:4][CH:3]=[C:2]([O:20][CH3:21])[CH:1]=2)[CH:6]=1

참가 물질

5

반응 조건

온도
-78 °C

실험 절차

Naphthalene-2,6-diol (16.0 g, 0.1 mol) and NaH (6.0 g, 0.25 mol) was combined together in a 500 mL flask under argon. The mixture was cooled to −78° C. before the addition of anhydrous DMF (200 mL) by injection. The mixture emitted a significant amount o gas. Stirring was continued at room temperature for 2 hours. Dimethyl sulfate (31.5 g, 0.25 mol) was added dropwise after the mixture was cooled to −78° C. again. The reaction was continued overnight at room temperature before 200 mL of anhydrous DMF was added. Compound 5 (16.0 g, ˜85.1% yield) was collected as a white powder by filtration and washed with water and methanol before drying under vacuum. 1H NMR (CDCl3, 500 MHz): δ 7.67 (d, 2H, J=8.5 Hz), δ 7.17 (d×d, 2H, J=8.5 Hz×2.5 Hz), δ 7.13 (d, 2H, J=2.5 Hz), δ 7.13 (d, 2H, J=2.5 Hz), δ 3.93 (s, 6H).

후처리

  1. additionwas added

출처 및 근거

ORD 기록
ord-f2549343c6ad405a87de030d1a271920
출처 데이터셋
uspto-grants-2015_05
특허 번호
US09035004B2

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