diphenyl carbene

例句：

1. 1.The reaction of diphenyl carbene with oxygen is a key step in the production of organic compounds.
   二苯基碳烯与氧气的反应是制备有机化合物的关键步骤。
2. 2.The discovery of diphenyl carbene has led to significant advancements in the field of organic chemistry.
   发现二苯基碳烯在有机化学领域取得了重大进展。