Photo-induced radical borylation of hemiacetals via C–C bond cleavage
作者:Qianyi Liu、Jianning Zhang、Lei Zhang、Fanyang Mo
DOI:10.1016/j.tet.2020.131867
日期:2021.1
In this study, we reported a photo-induced radical borylation of hemiacetal derivatives via C–Cbondcleavage. This transformation can be realized under mild conditions with simple reaction settings and irradiation of visible light. A series of substrates, including both cyclic and linear hemiacetal derivatives, were effectively transformed to the borylation product in moderate to good yields. Finally
Titanocene-Catalyzed Reduction of Lactones to Lactols
作者:Xavier Verdaguer、Marcus C. Hansen、Scott C. Berk、Stephen L. Buchwald
DOI:10.1021/jo971560s
日期:1997.11.1
A convenient method for the conversion of lactones to lactols is described. The hydrosilylation to lactols is carried out via air-stable titanocene difluoride or a titanocene diphenoxide precatalyst using inexpensive polymethylhydrosiloxane (PMHS) as the stoichiometric reductant. These procedures have been demonstrated with a variety of substrates and proceed in good to excellent yield.
Tandem Cross-Metathesis/Hydrogenation/Cyclization Reactions by Using Compatible Catalysts
作者:Janine Cossy、Frédéric Bargiggia、Samir BouzBouz
DOI:10.1021/ol027347m
日期:2003.2.1
[GRAPHICS]A one-pot tandem cross-metathesis/hydrogenation/cyclization procedure was achieved at room temperature, under 1 atm of hydrogen, in the presence of a ruthenium catalyst and PtO2 showing the compatibility of the two catalysts. This tandem reaction allows the synthesis of substituted lactones and lactols from acrylic acid and acrolein, respectively, in the presence of unsaturated alcohols.
Catalytic Method for the Reduction of Lactones to Lactols
作者:Xavier Verdaguer、Scott C. Berk、Stephen L. Buchwald
DOI:10.1021/ja00155a031
日期:1995.12
DANA, G.;FIGADERE, B.;TOUBOUL, E., TETRAHEDRON LETT., 1985, 26, N 46, 5683-5684