A method for preparing a hydrocarbylhydrocarbyloxysilane of formula R.sub.aH.sub.pSi(OR).sub.(4-a-b), where each R is independently a hydrocarbyl group and subscript a is 1 to 4 and subscript b is 1 to 2 is disclosed. The method includes heating ingredients including a hydrocarbyl carbonate and a source of silicon and catalyst. The method can be used to make dimethyldimethoxysilane.

A method is useful for preparing alkylalkoxysilanes, such as alkylalkoxysilanes, particularly dimethyldimethoxysilane. The method includes heating at a temperature of 150° C. to 400° C., ingredients including an alkyl ether and carbon dioxide, and a source of silicon and catalyst. The carbon dioxide eliminates the need to add halogenated compounds during the method.

The present invention provides: industrially desirable and novel optically-active cyclopentenone derivatives; and a novel industrial manufacturing method. The novel optically-active cyclopentenone derivatives and method for manufacturing the same are, respectively: an intermediate for industrially desirable and novel prostaglandin derivatives and the like; and a method for manufacturing the same. It is expected that the present invention will be commercialized and industrialized.

A process for the preparation of (2R, 6R)-hydroxynorketamine is provided. The process requires no chromatography purification and affords the (2R, 6R)-hydroxynorketamine in eight steps with a 26% overall yield and greater than 97% purity.

The present disclosure provides, inter alia, methods for preparing formaldehyde from carbon dioxide using bis(silyl)acetals, methods for incorporating carbon derived from carbon dioxide into a complex organic molecule derived from formaldehyde using bis(silyl)acetals, and methods for generating an isotopologue of a complex organic molecule derived from formaldehyde using bis(silyl)acetals.

A method of forming a particle includes, in a disperse phase within an aqueous suspension, polymerizing a plurality of mer units of a hydrophilic monomer having a hydrophobic protection group, thereby forming a polymeric particle including a plurality of the hydrophobic protection groups. The method further includes converting the polymeric particle to a hydrophilic particle.

One-pot synthetic methods are disclosed for synthesizing curable, antimicrobial silsesquioxane-silica hybrids by hydrolytically co-condensing a tetraalkoxysilane with two different trialkoxysilanes. Particles are also disclosed that are substantially spherical and have an ordered lamellar internal structure. In addition, polymers prepared from the curable, antimicrobial silsesquioxane-silica hybrids and co-monomers are disclosed.

Oximido ester-functional siloxanes, including those with oxamido ester side chains, are produced by reacting an alkoxy oxamido ester silane with water, optionally in the presence of further alkoxy silanes.

The invention relates to an alkoxysilane polysulfide, of formula (I):
(R.sup.3O).sub.3-n(R.sup.1).sub.nSi—CH.sub.2—(R.sup.2)CH—Z—S.sub.x—Z—HC(R.sup.2)—CH.sub.2—Si(R.sup.1).sub.n(OR.sup.3).sub.3-n  (I),
in which: R.sup.1, which are identical or different, each represent a monovalent hydrocarbon group having from 1 to 18 carbon atoms; R.sup.2, which are identical or different, each represent a monovalent hydrocarbon group having from 1 to 4 carbon atoms; R.sup.3, which are identical or different, each represent a monovalent hydrocarbon group having from 1 to 12 carbon atoms, preferably from 1 to 6 carbon atoms; Z, which are identical or different, each represent a divalent hydrocarbon bonding group comprising from 1 to 16 carbon atoms; x is an integral or fractional number greater than or equal to 2; and n is an integer equal to 0, 1 or 2.

The purpose of the present invention is to provide a method for producing an oligosiloxane and an oligosiloxane synthesizer, by which an oligosiloxane can be efficiently produced. An oligosiloxane can be efficiently produced by the method for producing an oligosiloxane, which includes a condensation step for generating a hydrosiloxane having a structure represented by the following Formula (d) by reacting an alkoxysilane having a structure represented by the following Formula (b) with a hydrosilane having a structure represented by the following Formula (c) in the presence of a boron compound having Lewis acidity, and a hydrosilylation step for generating an alkoxysiloxane having a structure represented by the following Formula (f) by reacting the hydrosiloxane having the structure represented by Formula (d) generated in the condensation step with a carbonyl compound represented by the following Formula (E) in the presence of a boron compound having Lewis acidity. Moreover, an oligosiloxane having arbitrary substituent sequences can be produced. ##STR00001##