扩环的英文

ring expansion ring enlargement

• 扩:    expand; enlarge; e ...
• 环:    ring; hoop
• 活塞扩环器:    piston ring expand ...

例句与用法

1. Lorazepam was synthesized by the following seven steps : condensation reaction ( 1 ) , condensation reaction ( 2 ) , cyclic reaction , ring expanding reaction , acylate reaction , hydrolysis reaction and refining
   摘要详细设计了劳拉西泮的合成路线，主要过程有缩合反应（一） 、缩合反应（二） 、环合反应、扩环反应、酰化重排反应和水解反应。
2. A novel ring - enlargement oxidation of polyphenyl substituted cyclopentadienes in air ( or molecular oxygen ) promoted by perchloric acid was described , in which an oxygen atom was inserted into the cyclopentadiene - ring , forming a six - membered pyrylium salts
   摘要报导了空气（或氧气）存在的条件下，由高氯酸引发多苯基取代环戊二烯发生新颖的碳碳键断裂扩环反应，在此反应中，氧原子插人到环戊二烯环中形成相应的六元环吡喃盐类化合物。