1. Preparation of pyrazol 1,5-a pyridine and its salts (divisional request 20191094)

摘要

In this process, some forms of realici oacute; n are provided for the manufacture of an F amp compound; oacute; formula C or a salt, as described below. In some forms of realici oacute; N, an F amp compound; oacute; rmula I or a salt, solution or hydrate acceptable from a pharmacological and ampere point of view; eacute; utico is provided here. In some forms of realici oacute; N, the light in the form of S amp; oacute; compound is provided here, such as the first crystal form of compound; / P