该类化合物是以香芹酮为起始原料，经过氯代反应，缩合反应、硼氢化钠还原和黄鸣龙还原反应得到的。
The compounds are obtained by using carvone as an initial raw material through chlorination reaction, condensation reaction, sodium borohydride reduction and Huang Min-lon reduction reaction.
以双氰胺钠和糖精为起始原料，经过开环、光气化、缩合等一系列反应制备了苯磺隆，合成反应的总收率可达57。
Using sodium dicyandiamide and saccharin as raw materials, tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation with total yield of 57.
例如，如果该角度介于 0 和 90 度之间，则起始线经过左上角，结束线经过右下角。
For example, if the angle is between 0 and 90 degrees, the starting line passes through the upper-left corner, and the ending line passes through the lower-right corner.
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