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Volumn 358, Issue 10, 2016, Pages 1694-1698

An Efficient, Stable and Reusable Palladium Nanocatalyst: Chemoselective Reduction of Aldehydes with Molecular Hydrogen in Water

Author keywords

aldehydes; binaphthyl stabilized palladium nanocatalyst; chemoselective reduction; reusable catalyst; water as a solvent

Indexed keywords


EID: 84964790157     PISSN: 16154150     EISSN: 16154169     Source Type: Journal    
DOI: 10.1002/adsc.201501131     Document Type: Article
Times cited : (26)

References (58)
  • 56
    • 85043211886 scopus 로고    scopus 로고
    • Pressure of a hydrogen balloon is 1 atm. We have also carried out three different reactions of 4-methylbenzaldehyde 1 (3 mmol) with 1 mol% of Pd-BNP in 5 mL water in a Shaker hydrogenator apparatus with 1 atm, 2 atm and 4 atm hydrogen pressure. The isolated yields of the product 2a for all these cases are 93%, 94% and 97% with different reaction times. The reaction with 1 atm hydrogen pressure was completed within 17 h, but 2 atm and 4 atm hydrogen pressure reactions took 12 h and 5 h for completion. In higher atmospheric hydrogen pressures, reduction of the reaction time was observed. Increasing the H, pressure increases the rate of reaction without affecting the yield of the product
    • 2 pressure increases the rate of reaction without affecting the yield of the product.
  • 57
    • 84990177573 scopus 로고    scopus 로고
    • of catalyst was carried out with different lipophilic solvents such a carbon tetrachloride, benzene, toluene and hexanes, only, yields of the product 2a were isolated after 24 h of reaction, These observations show that the rate of reaction is accelerated when water is used as solvent and reduction is more favorable in water than in the lipophilic solvents
    • When the reduction reaction of 4-methylbenzaldehyde 1 with 1 mol% of catalyst was carried out with different lipophilic solvents such a carbon tetrachloride, benzene, toluene and hexanes, only 10–20% yields of the product 2a were isolated after 24 h of reaction. These observations show that the rate of reaction is accelerated when water is used as solvent and reduction is more favorable in water than in the lipophilic solvents.
  • 58
    • 85043205544 scopus 로고    scopus 로고
    • We have performed the reduction reaction of 0.5 mmol of 4-methylbenzaldehyde 1 with 1 mL and 0.5 mL of, yields of alcohol 2a were isolated, The yield of the product 2a was decreased by increasing the concentration of the reaction
    • We have performed the reduction reaction of 0.5 mmol of 4-methylbenzaldehyde 1 with 1 mL and 0.5 mL of water, 83% and 55% yields of alcohol 2a were isolated. The yield of the product 2a was decreased by increasing the concentration of the reaction.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.