Abstract: Disclosed is a preparation method for an SGLT2 inhibitor intermediate V, the method comprising: adding a compound IV to a solvent, and in the presence of a catalytic reagent, carrying out heat preservation reaction with a fluorination reagent. The preparation process for the intermediate V is simple in operations, mild in reaction conditions and high in safety, facilitates quality control and is suitable for industrial production. In addition, the intermediate V prepared by the method is high in purity, has few side reaction product monofluoro-impurity shown as structural Formula V?, is easy to purify, and is applicable to quality research on active pharmaceutical ingredients and preparations of the SGLT2 inhibitor.

Abstract: An example method for generating a three-dimensional (3D) illustration of a photovoltaic panel array current distribution wiring system for photovoltaic panel array current distribution wiring system installation, comprising obtaining initial photovoltaic panel array current distribution wiring system installation parameters, determining the 3D illustration of the photovoltaic panel array current distribution wiring system based on the initial photovoltaic panel array current distribution wiring system installation parameters and information of a site environment of the photovoltaic panel array current distribution wiring system, and determining actual photovoltaic panel array current distribution wiring system installation parameters using the 3D illustration of the photovoltaic panel array current distribution wiring system.