摘要:
Disclosed are a preparation method of adamantyltrimethylammonium hydroxide, and an aqueous quaternary ammonium base solution prepared from the same, relating to the technical field of molecular sieve template agent production. The preparation method comprises the following steps of: S1, salification: weighing dimethyladamantanamine, adding dimethyl carbonate, evenly mixing the mixture to prepare a quaternized mixture, and under a helium sealing atmosphere, heating the quaternized mixture to 135°C to 150°C for reaction for no less than 6 hours to obtain an adamantyltrimethylammonium carbonate monomethyl ester salt; and S2, hydrolysis: dissolving the adamantyltrimethylammonium carbonate monomethyl ester salt into water, adding calcium hydroxide, blowing nitrogen from a lower part of a liquid level, heating the mixture until a boiling state is reached, simultaneously removing a byproduct methanol to form the adamantyltrimethylammonium hydroxide, and recovering a product to prepare the aqueous quaternary ammonium base solution. The preparation method of the adamantytrimethylammonium hydroxide disclosed by the invention has the advantage that an impurity content can be reduced.
摘要:
The present invention relates to the production of xylene derivatives from furfural and its derivatives. The invention describes new routes for converting furfural and its derivatives into xylene derivatives including novel intermediates.
摘要:
The present invention relates to a method for reducing unsaturated organic compounds selected from the group consisting of the aldehydes, ketones, imines, carboxylic acids, amides and esters using a boron formate of formula (I) in the presence of a solvent and optionally of a base. The invention also relates to the use of the method for reducing unsaturated organic compounds selected from the group consisting of the aldehydes, ketones, imines, carboxylic acids, amides and esters according to the invention in the preparation of methanol, methylated amines, formaldehyde and alcohols; for the preparation of reagents for Suzuki coupling reactions; and in the production of vitamins, pharmaceutical products, adhesives, acrylic fibres, synthetic leathers and pesticides. Formula (I).
摘要:
The present invention relates to a process for preparing glucaric acid or lactone thereof, the process comprising: reacting glucose with oxygen in the presence of a heterogeneous oxidation catalyst comprising a metal selected from the group consisting of Pd, Pt, and a combination thereof to convert at least a portion of the glucose to glucaric acid or lactone thereof, wherein the pH of the reaction mixture is less than 7 and the reaction is conducted in the substantial absence of added base, and wherein at least about 50% of the glucose is converted to glucaric acid or lactone thereof.
摘要:
A method for preparing 1-adamantyltrimethylammonium hydroxide is disclosed. The method comprises reacting 1-adamantyldimethylamine with dimethyl carbonate to produce 1-adamantyltrimethylammonium methylcarbonate, which is then reacted with calcium hydroxide or magnesium hydroxide in the presence of water to produce 1-adamantyltrimethylammonium hydroxide.
摘要:
A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm. The fourth step is contacting the second reaction intermediate with an alkali metal hydroxide to form the amine