专利号:WO-2025108575-A1 优先权日:2023-11-21 标 题:Methods of selective deprotection and synthesis of transhydrindane- skeleton-based compounds 发明人:HUBER FLORIAN MAURITIUS ERASMUS 权利人:ROCHE DIAGNOSTICS GMBH 摘要:The present invention relates to methods of selectively deprotecting a transhydrindane-skeleton-based compound comprising at least two different silyl ether groups. The present invention further relates to methods of synthesizing a Vitamin D molecule and to Vitamin D molecules obtainable by such processes. Furthermore, the present invention relates to a compound according to formula (I) comprising two different silyl ether groups, its use in the synthesis of Vitamin D molecules and to methods of producing such a compound.
专利号:US-6441246-B1 优先权日:1998-08-27 标题:Catalytic synthesis of aldehydes by direct hydrogenation of carboxylic acids 发明人:YAMAMOTO AKIO; NAGAYAMA KAZUHIRO 权利人:JAPAN SCIENCE & TECH CORP 摘要:A process which makes it possible to prepare aldehydes under mild reaction conditions with a high efficiency through the reduction of carboxylic acids with molecular hydrogen. Specifically, a process of reducing an organic carboxylic acid with molecular hydrogen in the presence of a catalyst into an aldehyde corresponding to the acid, characterized by conducting the reduction in the presence of a dehydrating agent such as a carboxylic anhydride.
专利号:US-6077805-A 优先权日:1997-03-06 标题:Hexacoordinated ruthenium or osmium carbene catalysts 发明人:VAN DER SCHAAF PAUL ADRIAAN; HAFNER ANDREAS; MUEHLEBACH ANDREAS 权利人:CIBA SC HOLDING AG 摘要:Hexacoordinated ruthenium and osmium catalysts of the formulae in which M and M' independently of one another are ruthenium or osmium; X, X', Y and Y' independently of one another are anionic ligands, or X and Y and X' and Y' in each case together are bis-anionic ligands L1 and L1' independently of one another are tertiary phosphine; L2 and L3 independently of one another are a monodentate ligand, or L2 and L3 together are bidentate, neutral electron donor ligands; L4 is tetradentate, neutral electron donor ligand; L5 is a bidentate, neutral electron donor ligand; and T and T' indepedently of one another are H or organic substituents, are useful for the synthesis of custom-tailored polymers and for the ring-closing metathesis of olefins.
专利号:CN-102105454-A 优先权日:2008-07-25 标题:Synthesis of Inhibitors of Type 1 11β-Hydroxysteroid Dehydrogenase
专利号:CN-101693758-A 优先权日:2009-10-30 标 题 :Synthesis of active ester and ether compound of carboxyl phenolic resin
专利号:CN-112374970-B 优先权日:2020-12-02 标题:Synthesis of biphenol