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HRID 249990作成日:2026年10月27日

Citraconic Anhydrides → 3-Bromo-4-methyl-2,5-dihydrofuran-2,5-dione

https://huagongshe.com/reaction/249990

反応式

関与物質

役割名称HCID仕込み量
反応物Citraconic AnhydridesHCID 12012—
反応物BromineHCID 24408—
反応物Aluminum bromideHCID 24409—
溶媒Ethyl AcetateHCID 8857—
生成物3-Bromo-4-methyl-2,5-dihydrofuran-2,5-dioneHCID 105838549,023.2%

反応条件

温度120 °C

反応手順

A mixture of 3-methyl-2,5-furandione (citraconic anhydride, 1 g), AlBr3 (26 mg) and Br2 (0.46 mL) was heated at 120° C. overnight. Ethyl acetate was then added and the organic phase was washed with HCl 0.1% and then with brine. The organic phase was dried and concentrated in vacuo to give the crude product (1.680 g) that was used without further purification.

情報源と証拠

DOI10.6084/m9.figshare.5104873.v1
特許番号US07863299B2
出典データセットuspto-grants-2011_01
ORD IDord-7740d3fce82847729128eaba9969fa7f
出典メモuspto-grants-2011_01