Chemoselective formation of cyclo-aliphatic and cyclo-olefinic 1,3-diols via pressure hydrogenation of potentially biobased platform molecules using Knölker-type catalysts
Chemoselective formation of cyclo-aliphatic and cyclo-olefinic 1,3-diols via pressure hydrogenation of potentially biobased platform molecules using Knölker-type catalysts
a polar unsaturated bond in either ketones or aldehydes but did hydrogenate a nonpolar unsaturated bond in alkynes and alkenes to give alkenes and alkanes selectively. These complexes also catalyzed a transferhydrogenation reaction from isopropyl alcohol (IPA) to alkynes and alkenes.
Catalytic dehydrogenative silylation of terminal alkynes with hydrosilanes has been achieved by using divalent Yb-imine complexes; The reaction with mono-, di-, and trihydrosilanes gave the corresponding alkynylsilanes in good yields. alpha,omega-Diynes were similarly silylated at both termini. Thus, oligomers were obtained from the diynes and dihydrosilanes. In addition, it has been found that the imine complexes exhibit catalytic activity for redistribution of the silyl groups of the alkynylsilanes and for Si-Si bond fission of disilanes.
Chemoselective formation of cyclo-aliphatic and cyclo-olefinic 1,3-diols <i>via</i> pressure hydrogenation of potentially biobased platform molecules using Knölker-type catalysts
作者:Christian A. M. R. van Slagmaat、Teresa Faber、Khi Chhay Chou、Alfonso J. Schwalb Freire、Darya Hadavi、Peiliang Han、Peter J. L. M. Quaedflieg、Gerard K. M. Verzijl、Paul L. Alsters、Stefaan M. A. De Wildeman
DOI:10.1039/d1dt01252e
日期:——
Hemicellulose-derived five-membered cyclic ketones are strategic precursors for sustainable 1,3-diol building blocks, and bifunctional iron catalysts provide unprecedented chemoselectivity in hydrogenation toward aliphatic and olefinic structures.