2results about How to "Short reaction steps" patented technology

This invention relates to the field of compound synthesis technology, specifically disclosing a method for preparing 8-chloronaphtho[1,2-b]benzofuran. The preparation method includes the following steps: mixing compound 1 with a solvent, then adding sodium hydroxide and sodium chloride, followed by dropwise addition of an aqueous solution of sodium hypochlorite, stirring the reaction mixture to obtain the target compound 8-chloronaphtho[1,2-b]benzofuran. The preparation method provided by this invention is low-cost and has a high yield.

The application relates to the technical field of compound synthesis, and particularly discloses a preparation method of 2-bromofluorenone. According to the method, 4-bromo-2'-iodo-biphenyl is reacted with carbon dioxide under the action of a strong base to generate 2-bromofluorenone in one step, the reaction step is short, the production cost is greatly reduced, the reaction condition is mild, the process operation is simple, the post-treatment of the reaction is simple, the product with high purity can be easily obtained, and the method is suitable for process amplification production.