Trimethyl orthoformate → (2,2-Bis(fluoromethyl)-1,3-dioxan-5-yl)methanol

HRID 31596

反応式

HRID 31596 の反応式
[OH:1][CH2:2][CH:3]([CH2:6][OH:7])[CH2:4][OH:5].[F:8][CH2:9][C:10]([CH2:12][F:13])=O.C(OC)(OC)OC.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C(N(CC)CC)C>[F:8][CH2:9][C:10]1([CH2:12][F:13])[O:5][CH2:4][CH:3]([CH2:6][OH:7])[CH2:2][O:1]1

参加物

6

反応条件

温度
60 °C

実験手順

A mixture of 2-(hydroxymethyl)-1,3-propanediol (2.2 g, 20.7 mmol), 1,3-difluoroacetone (3.89 g, 41.4 mmol), trimethyl orthoformate (3.44 ml, 20.7 mmol), and p-toluenesulfonic acid monohydrate (356 mg, 2.07 mmol) was stirred at 60° C. for 10 hours. After completion of the reaction, triethylamine (577 μl) was added to the reaction mixture, which was then concentrated. The residue was purified by silica gel column chromatography (elution solvent: heptane/ethyl acetate) to obtain the title compound (1.6 g, yield: 43.4%) as a light yellow oil.

後処理

  1. additionwas added to the reaction mixture, which
  2. concentrationwas then concentrated
  3. customThe residue was purified by silica gel column chromatography (elution solvent: heptane/ethyl acetate)

出典と根拠

ORDレコード
ord-643f1dd86f91404aa5f5e314bc0f49bb
出典データセット
uspto-grants-2008_09
特許番号
US07425634B2

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