ChemInform Abstract: Nickel‐Catalyzed Indium(I)‐Mediated syn‐Selective Propargylation of Aldehydes.

Hirashita, T.; Suzuki, Yuuki; Tsuji, Hiromitsu; Satô, Yoshiki; Naito, Kojiro; Araki, Shuki

doi:10.1002/chin.201314026

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2018

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“…[12][13][14] Solid acid catalysts seem most suitable for this type of work. [15][16][17][18][19] Among these solid acid catalyst systems, zeolites exhibit superior catalytic performance in epoxide ring opening. 20 Epoxides are important and well-known carbon electrophiles that can be industrially produced from the corresponding olefins.…”

Section: Introductionmentioning

confidence: 99%

The Role of Bronsted and Lewis Acidity in the Green Synthesis of Homopropargyl Alcohols over HZSM-5

et al. 2018

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A highly efficient and simple reaction under exceptionally mild conditions is shown for the synthesis of biologically and pharmaceutically active molecules of homopropargyl alcohol using HZSM-5 as the catalyst. Products analyzed by IR, 1H NMR, 13C NMR and GC-MS showed consistent yields of 98 % of the alcohol, even with respective recycles of the regenerated catalyst. The reaction was also carried out with selected mineral acids, acidic oxides and other acidic catalysts to compare reactivity and the influence of the type of acidity involved in the reaction. The results indicate that the presence of both Brønsted and Lewis acidity is beneficial for inducing a high rate of reaction when compared to systems having either predominantly Brønsted or Lewis acidity.

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