100891-32-5Relevant academic research and scientific papers
Iridium-Catalyzed Intramolecular C–H Silylation of Siloxane-Tethered Arene and Hydrosilane: Facile and Catalytic Synthesis of Cyclic Siloxanes
Lin, Yan,Jiang, Ke-Zhi,Cao, Jian,Zheng, Zhan-Jiang,Xu, Zheng,Cui, Yu-Ming,Xu, Li-Wen
, p. 2247 - 2252 (2017)
Catalytic C–H silylation is an increasingly important topic in the field of organosilicon chemistry and homogenous catalysis as well as organic synthesis, but such syntheses and transformations are usually challenging and often incompatible with some functional groups. In this manuscript, a new type of silanol-directed intramolecular dehydrogenative silylation under iridium catalysis has been developed. The described silylative cyclization has good functional group compatibility, providing a general and efficient route to unsymmetrical cyclic siloxanes with multiple potentially modifiable silicon atoms in high site-selectivities. The resulting organosilicon compounds exhibit diverse synthetic applications owing to their unique structures. (Figure presented.).
Preparation method of five-element cyclic disiloxane compounds
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Paragraph 0025; 0026; 0027; 0028, (2017/10/13)
The invention relates to the field of organic silicon synthesis. In order to solve the problems in the synthesis of five-element cyclic disiloxane compounds, the invention provides a preparation method of five-element cyclic disiloxane compounds. The method comprises the following steps: by using dialkyl disiloxanes of which the structural formula is disclosed as (I) as the raw material, performing reaction with a catalyst precursor and a hydrogen receptor in a reaction medium in an inert gas protective atmosphere at 90-120 DEG C for 3-24 hours, and performing separation to obtain the product five-element cyclic disiloxane compounds. The method has favorable adaptability to substrates containing substituent groups with different properties in different positions, and can obtain the series five-element cyclic disiloxane compounds at higher yield.
