一、分析思路及突破口的确定1.分析思路(1)正向合成或推断:原料→中间产物→产品;(2)逆向合成或推断:产品→中间产物→原料;(3)正逆结合法合成或推断:采用综合思维的方法,将正向或逆向推导出的几种合成途径结合起来,从而得到最佳合成路线。2.突破口的确定(1)从有机物的物理特征突破:注意留心归纳各类常见的有代表性的有机物的颜 First, the analysis of ideas and the definition of a breakthrough 1. Analytical ideas (1) forward synthesis or inference: raw materials → intermediate products → products; (2) reverse synthesis or inference: product → intermediate → raw materials; (3) Synthesis or inference: The method of synthesis of thinking, the forward or reverse synthesis of several synthetic routes to get the best synthesis route. 2. Determination of the breakthrough (1) breakthrough from the physical characteristics of organic matter: pay attention to pay attention to all kinds of common organic representative of the color of the face