para;
为什么有机化学中的ortho、meta、para对应苯环的1,2、1,3 ...
2019年7月6日 大致可以理解成，在早期芳香亲电取代实验过程中，一般苯环上原有基团是致活的，反应的主产物取代基上了邻位，所以称其为ortho（直接），副产物绝大部分上对位，称para（旁边），最少的自然是间位取代产物，称meta（随后）。. 但早期化学家各执己 2017年1月9日 There are many meanings now, derived from Greek, French, and English sources. There doesn't seem to be a single meaning, instead developing over time. Originally, the prefix "para-" came from Greek and means "next to" and "side by side" and gives rise to words like parallel and paragraph. Also from the Greek is a sense of What is the meaning of the prefix "para"? - Socratic2019年7月6日 大致可以理解成，在早期芳香亲电取代实验过程中，一般苯环上原有基团是致活的，反应的主产物取代基上了邻位，所以称其为ortho（直接），副产物绝大部分上对位，称para（旁边），最少的自然是间位取代产物，称meta（随后）。. 但早期化学家各执己 为什么有机化学中的ortho、meta、para对应苯环的1,2、1,3 ...
What is the meaning of the prefix "para"? - Socratic
2017年1月9日 There are many meanings now, derived from Greek, French, and English sources. There doesn't seem to be a single meaning, instead developing over time. Originally, the prefix "para-" came from Greek and means "next to" and "side by side" and gives rise to words like parallel and paragraph. Also from the Greek is a sense of 2019年7月6日 大致可以理解成，在早期芳香亲电取代实验过程中，一般苯环上原有基团是致活的，反应的主产物取代基上了邻位，所以称其为ortho（直接），副产物绝大部分上对位，称para（旁边），最少的自然是间位取代产物，称meta（随后）。. 但早期化学家各执己 为什么有机化学中的ortho、meta、para对应苯环的1,2、1,3 ...2017年1月9日 There are many meanings now, derived from Greek, French, and English sources. There doesn't seem to be a single meaning, instead developing over time. Originally, the prefix "para-" came from Greek and means "next to" and "side by side" and gives rise to words like parallel and paragraph. Also from the Greek is a sense of What is the meaning of the prefix "para"? - Socratic
