Реакция #43956

Уравнение реакции

hydrogen

methanol

methanol

methanol

(6-hydroxy-1-benzofuran-3-yl)carboxylic acid

sodium methoxide

→

(6-hydroxy-2,3-dihydro-1-benzofuran-3-yl)acetic acid

Выход 98.5%

Условия реакции

Обработка

1. 1
   workup.ADDITIONwas added

Методика

To a mixture of (1,5-cyclooctadiene)rhodium trifluoromethanesulfonate (47 mg) and (S,S)-Et-FerroTANE (44 mg) was added methanol (15 mL) sufficiently substituted by argon gas, and the mixture was stirred at room temperature 15 min. To a mixture of (6-hydroxy-1-benzofuran-3-yl)carboxylic acid (1.92 g) and sodium methoxide (270 mg) was added methanol (35 mL) sufficiently substituted by argon gas. The methanol solution prepared earlier was added thereto, and the mixture was stirred at room temperature for 2 hr under 0.7 MPa hydrogen atmosphere. The reaction mixture was quantified by HPLC. As a result, the enantiomeric excess was 91.2%, and the yield was 98.5%.

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