bis(trimethylsilyl) derivative of 4-aminophenol;N,O-bistrimethylsilyl-p-aminophenol;O,N-bis-(trimethylsilyl)-4-aminophenol;p-(Trimethylsilyloxy)-N-(trimethylsilyl)-anilin;N,O-Bis(trimethylsilyl)-p-aminophenol;Silanamine, 1,1,1-trimethyl-N-[4-[(trimethylsilyl)oxy]phenyl]-;N-trimethylsilyl-4-trimethylsilyloxyaniline
In this study, a mild and efficient method is developed for the silylation of diverse functional groups using CeO2 nanoparticles (n-CeO2) as solid catalysts with hexamethyldisilazane (HMDS) as silylating agent at roomtemperature. Alcohols, phenols and acids are silylated to their respective silyl derivatives with faster reaction rate while amines and thiols required relatively longer reaction time
Novel trienoic retinoid compounds of
with apoptotic activity useful for the prevention and treatment of cancer.
具有凋亡活性的新型三烯醇类维生素A化合物,可用于预防和治疗癌症。
Calverley, Martin J., Synthetic Communications, 1983, vol. 13, # 7, p. 601 - 610
作者:Calverley, Martin J.
DOI:——
日期:——
A study of ortho- and para-siloxyanilines for the synthesis of mono-, bi-, and tetra-nuclear early transition metal–imido complexes
作者:J.M Benito、Silvia Arévalo、E de Jesús*、F.J de la Mata、J.C Flores*、R Gómez
DOI:10.1016/s0022-328x(00)00391-0
日期:2000.9
The siloxyanilines o-Me(3)SiOC(6)H(4)NH(2) (1) and p-RMe(2)SiOC(6)H(4)NH(2) (R = H (2); R = Me (3)), and their N-silylated derivatives p-Me(3)SiOC(6)H(4)NHSiMe(3) (4) and p-Me(3)SiOC(6)H(4)N(SiMe(3))(2) (5) have been prepared from ortho- or para-aminophenol and used in the synthesis of imido complexes. Thus, binuclear [Ti(eta (5)-C(5)H(5))Cl} mu -NC(6)H(4)(p-OSiMe(3))}](2) (6) and mononuclear [TiCl(2)NC(6)H(4)(p-OSiMe(3))}(py)(3)] (7) imido complexes have been obtained from the reaction of 3 and [Ti(eta (5)-C(5)H(5))Cl(3)] or [TiCl(2)(N'Bu)(py)(3)], respectively. In contrast, the reaction of 1 with TiCl(4) and 'Bupy affords the titanocycle [TiCl(2)OC(6)H(4)(o-NH)-N,O}('Bupy)(2)] (8). Compound 5 has also been used to prepare the niobium imide complex [NbCl(3)NC(6)H(4)(p-OSiMe(3))}(MeCN)(2)] (9), by its reaction with NbCl(5) in CH(3)CN. These findings have been applied to the synthesis of polynuclear systems. Thus, chlorocarbosilane Si[CH(2)CH(2)CH(2)Si(Me)(2)Cl], (CS-Cl) has been functionalized with the ortho- and para-aminophenoxy groups to give 10 and 11, respectively. The use of 11 has allowed the formation of the tetranuclear compound 12. Attempts to synthesize terminal imido titanium complexes from 10 and TiCl(4) in the presence of 'Bupy and Et(3)N, give complex 8 and carbosilane CS-Cl. (C) 2000 Elsevier Science S.A. All rights reserved.
Cyclodextrins in Polymer Chemistry: Enzymatically Catalyzed Oxidative Polymerization of Para-Functionalized Phenol Derivatives in Aqueous Medium by Use of Horseradish Peroxidase
作者:Yanjie Pang、Helmut Ritter、Monir Tabatabai
DOI:10.1021/ma021678x
日期:2003.9.1
Ethyl 1-[(4-hydroxyphenyl)aminocarbonyl)]-2-vinylcyclopropane carboxylate has been oligomerized using horseradisch peroxidase as catalyst. The oligomerization was achieved in the presence of cyclodextrine at room temperature in phosphate buffer (pH 7). The oligomer formed was cross-linked via free radical polymerization.