{"title":"Semi-reduction of alkynes catalyzed by a tri-palladium complex","authors":"Yu-Hao Wang, Shiuh-Tzung Liu","doi":"10.1016/j.poly.2024.117276","DOIUrl":null,"url":null,"abstract":"<div><div>Upon activation by ammonia-borane, a tri-palladium complex [(<strong>bpnp</strong>)<sub>2</sub>Pd<sub>3</sub>Cl<sub>2</sub>]Cl<sub>2</sub> (<strong>Pd<sub>3</sub></strong>) was found to be catalytically active for hydrogenation of alkynes to render the corresponding <em>cis-</em>olefins. Typically, a mixture of diphenylacetylene (0.80 mmol), <strong>Pd<sub>3</sub></strong> (0.2 mol %), and NH<sub>3</sub><sup>.</sup>BH<sub>3</sub> (10 mol%) in THF/H<sub>2</sub>O (10:1, 1 mL) was stirred at 30 °C under H<sub>2</sub> (1 atm) for 2 h, giving (<em>Z</em>)-stilbene in 95 % yield with a turnover frequency (TOF) ∼240 h<sup>−1</sup>. This catalyst is applicable to both internal and terminal alkynes with aryl or alkyl substituents.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"265 ","pages":"Article 117276"},"PeriodicalIF":2.4000,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polyhedron","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0277538724004522","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Upon activation by ammonia-borane, a tri-palladium complex [(bpnp)2Pd3Cl2]Cl2 (Pd3) was found to be catalytically active for hydrogenation of alkynes to render the corresponding cis-olefins. Typically, a mixture of diphenylacetylene (0.80 mmol), Pd3 (0.2 mol %), and NH3.BH3 (10 mol%) in THF/H2O (10:1, 1 mL) was stirred at 30 °C under H2 (1 atm) for 2 h, giving (Z)-stilbene in 95 % yield with a turnover frequency (TOF) ∼240 h−1. This catalyst is applicable to both internal and terminal alkynes with aryl or alkyl substituents.
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Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry.
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