تفاعل #1330390

معادلة التفاعل

(+)-(1S,4R)-4-(tert-butyl-dimethyl-silanyloxy)-cyclopent-2-enol

→

(+)-(1R,3S)-3-(tert-butyl-dimethyl-silanyloxy)-cyclopentanol

المذيبات

toluene

ظروف التفاعل

المعالجة

1. 1
   ترشيحThe reaction mixture was then filtered
2. 2
   تركيزconcentrated to a small volume
3. 3
   أخرىpurified by silica gel column chromatography with a 0–25% ethyl acetate in hexanes gradient

الإجراء التجريبي

A solution of (+)-(1S,4R)-4-(tert-butyl-dimethyl-silanyloxy)-cyclopent-2-enol (1.43 g, 6.67 mmol) (from Example 29a supra) and Wilkinson's catalyst (1.23 g, 1.33 mmol) (Aldrich) in toluene (55 mL) was subjected to atmospheric pressure hydrogenation for 16.5 hours. The reaction mixture was then filtered, concentrated to a small volume, and purified by silica gel column chromatography with a 0–25% ethyl acetate in hexanes gradient to give (+)-(1R,3S)-3-(tert-butyl-dimethyl-silanyloxy)-cyclopentanol as a colorless oil. (Yield 745 mg, 61%).

المصدر