Synthesis and reactions of some perfluoroalkyl ether substituted silanes
作者:Grace J. Chen、Christ Tamborski
DOI:10.1016/0022-328x(85)80301-6
日期:1985.9
aqueous media were studied and the ease of cleavage of the SiRfORf bond was found to be in the order HSi(RfORf)3 > CH3Si(RfORf)3 > (CH3)2Si(RfORf)2 > (CH3)3SiRfORf. The influence of the RfORf group on some properties of these compounds is also described.
(CH 3)n Si(R f OR f)4- n(n = 1-3)和HSi(R f OR f)3类型的全氟烷基醚取代的硅化合物,其中R f OR r = F(CF 3)通过有机锂试剂R f OR f之间的反应,已以高收率(64–81%)合成了2 COCF 2 CF 2锂和相应的氯化硅。研究对酸,碱和含水介质这些化合物的稳定性和SiR的裂解容易˚F OR ˚F键被发现是在该命令在HSi(R ˚F OR ˚F)3 > CH 3的Si(R ˚F OR f)3 >(CH 3)2 Si(R f OR f)2 >(CH 3)3 SiR f OR f。R f OR f的影响 还描述了这些化合物的一些性质上的基团。
Fiber-Treating Agent
申请人:Suzuki Keigo
公开号:US20080200432A1
公开(公告)日:2008-08-21
The present invention relates to a fiber-treating agent having a pH value of 2 to 5 at 20° C. and containing an alkoxysilane (a), an organic acid (b) and water (c), wherein 50% or more by weight of the component (a) is an alkoxysilane represented by the following formula (1): R
1
p
Si (OR
2
)
4-p
(1) wherein R
1
represents a C1 to C6 alkyl group, a phenyl group, or a C2 to C6 alkenyl group, R
2
represents a C1 to C6 alkyl group, and p is an integer of 1 to 3, and the number of moles of the component (c) is 3 times or more as large as that of the component (a), as well as a method of treating fibers with the fiber-treating agent, and fibers treated by this method.
Evidence for generation of the unsaturated sila-acetate species Me(O<sup>–</sup>)SiO by dissociation of the silanediolate dianion m-ClC<sub>6</sub>H<sub>4</sub>CH<sub>2</sub>SiMe(O<sup>–</sup>)<sub>2</sub>
作者:Jadwiga Chmielecka、Julian Chojnowski、Colin Eaborn、Włodimierz A. Stańcyzk
DOI:10.1039/c39870001337
日期:——
Kinetic studies indicate that in the cleavage of m-ClC6H4CH2SiMe(OH)2 by NaOH in Me2SO–H2O there is a major contribution by unimolecular dissociation of the dianion m-ClC6H4CH2SiMe(O–)2 to give the acetate ion analogue Me(O–)SiO.
动力学研究表明,在Me 2 SO–H 2 O中,NaOH裂解m -ClC 6 H 4 CH 2 SiMe(OH)2时,双阴离子m -ClC 6 H 4 CH 2的单分子解离作用很大。森达(O - )2,得到乙酸根离子类似物我(O - )的Si O.
Therapeutic product based on organic silicon derivatives
申请人:——
公开号:US04985405A1
公开(公告)日:1991-01-15
Therapeutic produced based on an organic derivative of silicon, notably of silanol complexed with an amino acid, with a pharmaceutically acceptable salt of such an acid, or with a protide. The produce is suitable for the preparation of medicaments for activation and regulation of metabolism and of growth and of multiplication of cells, in particular those which are involved in the immuno-processes or in the formation of conjunctive and bone tissue.
A simplified fabric phase sorptive extraction method for the determination of amphetamine drugs in water samples using liquid chromatography-mass spectrometry
作者:Xiaomeng Ruan、Limei Xing、Ju Peng、Shiying Li、Yiqun Song、Qianqian Sun
DOI:10.1039/c9ra10138a
日期:——
Fabric phase sorptive extraction (FPSE) can directly extract the target analytes and simultaneously determine many similar substances from complicated sample matrices. Also, it has very high chemical stability. Therefore, we used fabric phase sorptive extraction to analyze three amphetamine drugs (amphetamine (AM), methamphetamine (MAM), and 3,4-methylenedioxymethamphetamine (MDMA)) in water. This