Synthesis of Acylsilanes via Nickel-Catalyzed Reactions of α-Hydroxyallylsilanes
摘要:
The redox isomerization processes and tandem isomerization-aldolization reactions, mediated by nickel catalysts, offer new versatile entries to acylsilanes. For the second reaction, high diastereoselectivities, up to 98:2, have been obtained with bulky substituents on silicon.
Divergent Functionalization of Indoles with Acryloyl Silanes via Rhodium-Catalyzed C–H Activation
作者:Ping Lu、Chao Feng、Teck-Peng Loh
DOI:10.1021/acs.orglett.5b01258
日期:2015.7.2
by rhodium-catalyzed C–H functionalization of indoles with acryloyl silanes was developed, providing a convenient and highly effective method for the synthesis of functionalized acylsilane derivatives. By tuning the reaction condition, this C–H-activation-initiated reaction proceeds divergently with acryloyl silianes to selectively afford alkylation or alkenylation products via hydroarylation or oxidative
Triflimide-Catalysed Rearrangement of<i>N</i>-(1-Trimethylsilyl)allylhydrazones Results in the Formation of Vinylsilanes and Cyclopropanes
作者:Sebastian Dittrich、Franz Bracher
DOI:10.1002/ejoc.201501180
日期:2015.12
A synthesis of terminal vinylsilanes by triflimide-catalysed rearrangement of N-(1-trimethylsilyl)allylhydrazones is reported. This protocol provides a convenient access to versatile olefinic buildingblocks through a traceless bond construction. Hydrazones derived from aromatic aldehydes give cis-cyclopropanes in an unexpected side-reaction.
A new modification of Peterson reaction leading to elongation of three carbon units by treatment of aldehydes with titanium ate complex, prepared from 1-lithio-1-(1-alkoxy)allyltrimethylsilane and titanium(IV) isopropoxide, is described.
The Reaction of Polyhalides with Allylsilanes Catalyzed by Copper(I) Chloride
作者:Michiharu Mitani、Shigenori Hujita
DOI:10.1246/bcsj.70.3055
日期:1997.12
compounds in the presence of copper species, such as copper(I) chloride, copper(II) chloride or metallic copper, to form polyhalo compounds containing an allyl group. Other allylsilane derivatives than allyltrimethylsilane were also subjected to a reaction with carbontetrachloride. 3-Chloro- or 3-bromo-3-trimethylsilyl-1-propene gave 4,4,4-trichloro-1-trimethylsilyl-1-butene. Ethyl 1-trimethylsilylallyl