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HRID 253407作成日:2026年10月27日

Kojic Acid → 5-(4-Chloro-benzyloxy)-2-hydroxymethyl-pyran-4-one

https://huagongshe.com/reaction/253407

反応式

関与物質

役割名称HCID仕込み量
反応物Kojic AcidHCID 3840—
反応物Sodium HydroxideHCID 14798—
反応物1-(Bromomethyl)-4-chlorobenzeneHCID 69329—
溶媒MethanolHCID 887—
溶媒WaterHCID 962—
生成物5-(4-Chloro-benzyloxy)-2-hydroxymethyl-pyran-4-oneHCID 58086834—

反応条件

温度80 °C

反応手順

Kojic acid (70, 5.00 g, 35.2 mmol) and 4-chlorobenzyl bromide (22, 7.95 g, 38.7 mmol) were suspended in methanol (40 mL) in an 80 mL sealed tube. Sodium hydroxide in water (12 M, 2.93 ml) was added, The reaction was heated at 80° C. overnight. The resulting suspension was concentrated. Water was added and the mixture was filtered and washed with water to provide a brown solid. Washing with minimal methanol on the filter removed the brown color. A white solid (71, 7.58 g, 80%) was isolated. 1H-NMR was consistent with the desired compound.

情報源と証拠

DOI10.6084/m9.figshare.5104873.v1
特許番号US07872018B2
出典データセットuspto-grants-2011_01
ORD IDord-f4a65107e2984098a7215a47509e8780
出典メモuspto-grants-2011_01