3748-13-8Relevant articles and documents
Aqueous ZnCl2 Complex Catalyzed Prins Reaction of Silyl Glyoxylates: Access to Functionalized Tertiary α-Silyl Alcohols
Han, Man-Yi,Pan, Hong,Li, Pinhua,Wang, Lei
, p. 5825 - 5837 (2020/05/22)
An efficient Prins reaction of silyl glyoxylates in the presence of an aqueous ZnCl2 complex as a catalyst was developed, providing functionalized tertiary α-silyl alcohols in high yields under mild conditions. A preliminary investigation indicated that the aqueous ZnCl2 complex acted as a dual functional catalyst of Br?nsted and Lewis acid to activate the carbonyl groups of silyl glyoxylates via a dual-activation model.
Tiara-like octanuclear palladium(II) and platinum(II) thiolates and their inclusion complexes with dihalo- or iodoalkanes
Yamashina, Yukari,Kataoka, Yasutaka,Ura, Yasuyuki
, p. 3558 - 3567 (2014/05/06)
A tiara-like octanuclear palladium thiolate complex, [Pd(μ-SCH 2CO2Me)2]8, that has a toroidal structure was synthesized via reactions of either PdCl2 with methyl thioglycolate/N,N-diisopropylethylamine (DIEA) (conventional method) or [PdCl2(MeCN)2] with m-C6H4(CMe 2SCH2CO2Me)2 (alternative method). In the latter method, the tiara-like complex formed via the corresponding SCS-pincer complex and/or 1:1 PdCl2 and ligand complexes. With respect to the platinum analogues, the alternative method efficiently produced the tiara-like octanuclear complex [Pt(μ-SCH2CO 2Me)2]8 in high purity. Small molecules, such as CH2Cl2, ClCH2CH2Cl, CH 2Br2, and CH3I, were accommodated in the inner voids of the tiara rings to form 1:1 inclusion complexes. These complexes are stabilized not only by weak CH...X hydrogen bonds (X = Cl or Br) between the methylene protons of four or eight axially positioned methoxycarbonylmethyl groups on the tiara rings and the halogen atoms of the guest molecules but also by weak coordination of the halogen atoms to the transition-metal atoms.
Polymerization of diisopropenylbenzene
-
, (2008/12/07)
Processes for preparing substantially linear polymers from diisopropenylbenzenes are provided. The polymers are useful in making a variety of products, including coatings, pigment dispersing agents, and stabilizers.
Degradable network polymers based on di(meth)acrylates
Matsukawa, Daisaku,Okamura, Haruyuki,Shirai, Masamitsu
, p. 1290 - 1291 (2008/03/13)
Degradable di(meth)acrylates were synthesized. Di(meth)acrylates were polymerizable by both photo-irradiation and thermal treatment to form insoluble networks. The networks were decomposed by photo-assisted thermolysis. The decomposed networks were completely soluble in solvents. Copyright
PROCESS FOR PRODUCING DIHYDROXYBENZENE AND DIISOPROPYLBENZENDICARBINOL
-
Page/Page column 4, (2008/06/13)
A process for simultaneously producing a dihydroxybenzene and a diisopropylbenzene dicarbinol, which contains subjecting a diisopropylbenzene with an oxygen containing gas to obtain an oxidation reaction mixture containing a diisopropylbenzene dihydroperoxide and a diisopropylbenzene hydroxy hydroperoxide followed by an extraction separation step, a decomposition step, a distillation separation step, a reduction step and a post-treatment step in this order, the process containing purifying the diisopropylbenzene dicarbinol from the liquid containing the diisopropylbenzene dicarbinol obtained in the reduction step through purification operations containing crystallization, filtration and subsequent drying, and supplying a filtrate obtained by the filtration to the decomposition step and/or distillation separation step.
METHOD OF DEHYDROGENATING TRIISOPROPYLBENZENE AND DIISOPROPYLBENZENE
-
, (2008/06/13)
An economical and industrial method for the dehydrogenation of triisopropyl benzene can be provided by carrying out the reaction employing a solid catalyst having an iron compound and potassium compound as major components or an iron compound, potassium compound, and magnesium compound as major components, as a dehydrogenating catalyst for producing diisopropyl isopropenyl benzene, isopropyl diisopropenyl benzene and/or triisopropenyl benzene from triisopropyl benzene. In the dehydrogenation of triisopropyl benzene or diisopropyl benzene, by carrying out an off-and-on reaction in which the above described solid catalyst is employed and with which a regeneration period with steam or oxygen or air is provided, an economical and industrial dehydrogenation method having an extended life of the catalyst can be provided and will have an industrial superiority.
