The present invention relates to the technical field of organic chemical engineering, and in particular to a key intermediate for synthesizing prostaglandin compounds and a preparation method therefor. When applied to the synthesis of prostaglandin compounds, the process flow is simplified, the yield and product purity are improved, the production costs are reduced, and the industrial application is easy.

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The present invention is directed to a method of making an asymmetric polysulfide, comprising the step of simultaneously reacting an olefinically unsaturated compound, elemental sulfur, and a thiol in the presence of a catalytic amount of a base to produce the asymmetric polysulfide.

An aqueous composition contains N-benzyl-substituted N-(2-aminoethyl)-3-aminopropylsiloxane hydrochlorides, wherein the composition after storage for 6 weeks at 60° C. has a color number of ≤1 Gardner, a content of methanol of ≤0.5% by weight, an active substance content of ≤60% by weight, and a content of water of ≥40% to ≤60% by weight, and wherein the components in the composition sum to 100% by weight.

Functional, partially-fluorinated silane compound according to Formula (I): wherein: X is CH.sub.2=CH— or CHCH.sub.2—; R.sub.1 and R.sub.2 are linear or branched alkylenes having 1 to 4 carbon atoms; R.sub.f is a perfluoro(alkylene) group having 1 to 8 carbon atoms and, optionally, at least one catenary heteroatom selected from the group consisting of O and N; c is equal to the number of carbon atoms in X; and Y is —Cl or —OR, wherein R is a linear or branched alkyl having 1 to 4 carbon atoms. In some embodiments, Y is —O(CH.sub.2).sub.xCH.sub.3 wherein x is an integer from 0 to 3 are described. Methods of making and using such functional, partially-fluorinated silane compounds are also described

A silane-modified diallyl bisphenol compound and a preparation method thereof are provided. A diallyl bisphenol compound with hydroxyl groups at both ends and a silane with at least one alkoxy group and at least one functional group having a crosslinkable double bond at the ends are reacted, so as to obtain a silane-modified diallyl bisphenol compound with a functional group having a crosslinkable double bond at the end.

Processes for preparing aminosiloxanes. The process includes providing an alkoxy-rich partial hydrolyzate of silanes and silane mixtures and reacting the alkoxy-rich partial hydrolyzate of silanes and silane mixtures with one or more aminosilanes in the presence of a basic catalyst

A process prepares a cross-linked polymer containing urethane groups and silicon atoms. Starting materials of the process include a compound A) with a five-membered cyclic monothiocarbonate group, a compound B) with an amino group, selected from primary or secondary amino groups or blocked amino groups, and optionally, a compound C) with at least one functional group that reacts with a group —SH. One of the compounds contains a silicon-functional group. In one example of the process, compounds A) and B), and optionally C), are then reacted under exclusion of water to obtain a polymer with curable silicon-functional groups. The polymer is applied to a surface, gap, or a three-dimensional template. The silicon-functional groups are cured with ambient water. The polymer contains 0.001 to 0.3 mol of silicon per 100 g of the polymer.

This invention relates generally to the synthesis of Δ.sup.12-Prostaglandin J product using stereoretentive ruthenium olefin metathesis catalysts supported by dithiolate ligands. Δ.sup.12-Prostaglandin J products were generated with excellent selectivity (>99% Z) and in moderate to high/good yields (47% to 80% yield; 58% to 80% yield).

The present invention relates to a method for preparing organic compounds of formula (I) by reaction between a silylated formiate of formula (II) and an organic compound in the presence of a catalyst and optionally of an additive.

The invention also relates to use of the method for preparing organic compounds of formula (I) for the preparation of reagents for fine chemistry and for heavy chemistry, as well as in the production of vitamins, pharmaceutical products, adhesives, acrylic fibres, synthetic leathers, and pesticides.

The present invention relates to a novel method for producing fluorinated cycloaliphatic compounds from the analogous aromatic compounds by hydrogenation with an Rh-carbene catalyst system.