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Unusual Reactions of Cyclic Fluorosiloxanes
Author(s) -
Oguri Naoki,
Egawa Yasunobu,
Kawakami Yoshiteru,
Kobuna Chika,
Takeda Nobuhiro,
Unno Masafumi
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700306
Subject(s) - cleavage (geology) , yield (engineering) , chemistry , bond cleavage , reactivity (psychology) , hexa , salt (chemistry) , crystallography , organic chemistry , materials science , catalysis , medicine , alternative medicine , pathology , fracture (geology) , metallurgy , composite material
The reactivity of cyclic fluorosiloxanes, all‐ cis ‐[PhSiOF] 4 and [ i ‐BuSiOF] 4 , was investigated. Unusual bond cleavage was observed in the reaction of all‐ cis ‐[PhSiOF] 4 with 2,6‐lutidine to afford a hexafluorosilicate salt in 29 % yield. On the other hand, different bond cleavage was observed for [ i ‐BuSiOF] 4 resulting in a formation of a linear fluorotrisiloxane in 50 % yield. All products were characterized by spectroscopic analyses as well as X‐ray crystallography. In this paper, we discuss several new Si–O–Si bond cleavage and formation reactions; all reactions were performed under mild conditions that did not generate harmful acids. Consequently, cyclic fluorosiloxanes could serve as useful precursors for a wide variety of silicon compounds such as linear siloxanes, hexa‐coordinated silicates, and well‐defined silsesquioxanes.