Fittig's synthesis

例句：

1. 1. The Fittig's synthesis approach is widely used in the field of chemistry.
   费蒂格的合成方法在化学领域广泛使用。
2. 2. The Fittig's synthesis method has been proven to be more efficient than traditional methods.
   费蒂格的合成方法已被证明比传统方法更高效。
3. 3. The Fittig's synthesis method has been applied to various materials and found to be effective in improving their properties.
   费蒂格的合成方法已被应用于各种材料，并发现能有效改善其性能。