5 results about "Aldehyde synthesis" patented technology

The invention relates to the technical field of chemical synthesis, in particular to a preparation method of 1-benzyl alcohol-3-alkyl bicyclo [1.1. 1] pentane, which comprises the following steps: by taking aromatic aldehyde, [1.1. 1] propeller alkane and 4-alkyl substituted Hanss ester synthesized by aldehyde as initial raw materials and dichloroethane and the like as a solvent, carrying out a reaction under the protection of inert gas to obtain 1-benzyl alcohol-3-alkyl bicyclo [1.1. 1] pentane, and separating the 1-benzyl alcohol-3-alkyl bicyclo [1.1. 1] pentane from the 1-benzyl alcohol-3-alkyl bicyclo [1.1. 1] pentane. A three-component free radical coupling reaction is carried out under the illumination condition, and a 1-benzyl alcohol-3-alkyl bicyclo [1.1. 1] pentane product is synthesized in one step. The method has the advantages of mild reaction conditions, high reaction efficiency, low cost, simplicity and convenience in operation and the like, and a new method is provided for later structural modification of diaryl methanol drug molecules.

The application discloses a kind of synthesis aldehyde compound's method, it is related to green synthesis chemical field, the present application is synthesized by aldehyde synthesis device, the aldehyde compound synthesis device includes ionization source channel, gas sampling channel and mass spectrometer;First, ionization source channel is ionized into water radical cation cluster (H2O) 2 +· Ion;Then water radical cation cluster (H2O) 2 +· Ion and the positive alkane steam reacted by gas sampling channel output, produce alkane peroxide intermediate and aldehyde ion, finally using mass spectrometer to detect product, the present application provides a kind of green environmental protection synthesis aldehyde compound's method, can make a supplement to the existing synthesis aldehyde technical method, and reaction device is simple, need not catalyst, fast and efficient, high yield.

The application provides a propionaldehyde synthesis system and method, which comprises the following steps: 1) a raw material system comprising ethylene, carbon monoxide and hydrogen is reacted to obtain a gas phase product comprising propionaldehyde; 2) after the gas phase product is subjected to cooling treatment, a propionaldehyde liquid phase crude product and residual gas phase raw material are obtained, and the cooling treatment comprises internal cooling medium treatment and first external cooling medium treatment in sequence; 3) the propionaldehyde liquid phase crude product is subjected to stripping treatment by using synthesis gas raw material to obtain propionaldehyde and synthesis gas raw material after stripping; wherein the residual gas phase raw material and / or the synthesis gas raw material after stripping participates in the internal cooling medium treatment as an internal cooling medium. The propionaldehyde synthesis method can reduce the amount of first external cooling medium refrigeration water by subjecting the gas phase product to internal cooling medium treatment, thereby reducing energy consumption and production cost.

The application discloses an olefin hydroformylation aldehyde synthesis production device and process, comprising the following steps: (1) the raw material enters the bubble reactor of the reaction section of the reaction extraction rectifying tower and mixes with the catalyst, and carbon monoxide and hydrogen are introduced to carry out the hydroformylation reaction under high pressure; (2) the reaction product is overflowed to the rectifying section to carry out separation; (3) the alkanes byproduct and the olefin raw material with similar boiling points are separated through the eccentric rotating disc extraction tower of the extraction section of the reaction extraction rectifying tower; (4) the light components on the tower top are separated through the rectifying section; (5) the heavy components in the tower kettle are separated through the dividing wall column, and the aldehyde product is obtained through purification. The application adopts a new type of ionic liquid catalyst, separates the olefin and the alkane in the reaction extraction rectifying tower, improves the raw material utilization rate, simultaneously reduces the waste of the catalyst and the discharge of the raw material waste liquid, and increases the reaction conversion rate and the yield.

The application relates to a lauric aldehyde synthesis method and relates to the field of chemical synthesis, and comprises the following steps: under the action of a composite catalyst, lauryl alcohol is reacted with an oxidant in a solvent to obtain lauric aldehyde, and the pH of a reaction system is 7-10; wherein the composite catalyst comprises a metal halide and a TEMPO derivative; the TEMPO derivative is selected from one or more of 4-hydroxy-TEMPO and 4-methoxy-TEMPO; and the oxidant is a hypochlorite. The application solves the problems of high cost and difficulty in obtaining raw materials in the prior art, and has the advantages of mild catalytic reaction conditions, simple post-treatment steps, high reaction yield, high product purity, low production cost and suitability for industrial production.