Which substituent on an aromatic ring is ortho-para director?下列芳香环上的取代基,属于邻-对位定位基的是:A. -CHOB. -SO⏫HC. -CH=CH⏫D. -CN 相关知识点: 试题来源: 解析 C 在芳香环的亲电取代反应中,取代基的定位效应取决于其电子效应:邻对位定位基团通常为给电子基团
Re: If Fluorine is an electron withdrawing group, why is it an Ortho_Para director? « Reply #2 on: March 15, 2020, 05:35:05 PM » sigma withdrawing but pi donating. Both are relatively weak effects. The withdrawing deactivates overall, but the donation makes ortho and para reaction...
An alkoxy group connected to benzene ring is ortho- and para-orienting. Explain. View Solution The ortho and para directing groups are View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths ...
The narrow lines discovered by us on rotational transitions of H 2 O and OH molecules in water and water solutions of biomolecules are considered as resonances of circuits for ensuring the selectivity of communication. Discussed is the possibility of ortho/para conversion of H 2 O spin isomers ...
6.Summary – Ortho Nitrophenol vs Para Nitrophenol What is Ortho Nitrophenol? Ortho nitrophenol is an organic compound having a benzene ring attached to a -OH group and a -NO2 group at the 1stand 2ndpositions of the benzene ring. In other words, this compound has its substituted groups atta...
Of the four subjects that reported paraesthsias at rest, all reported them in bilateral dorsal and plantar surfaces of their feet and these symptoms were unchanged during testing. Discussion We found that mechanosensitivity in the lower extremity is present in people with T2DM when evaluated ...
Which of the following is an ortho- and para-director? a. -NO_2. b. -NH_2. c. -CN. d. -CO_2CH_3. Which of the following radical species is most stable? Which of the following is not an unsaturated fatty acid? A. CH3CH2CH2CH2CH2CH=CHCOOH B. CH3CH2CH2CH=CHCH=CHCOOH C....
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Which of the following is an ortho- and para-director? a. -NO_2. b. -NH_2. c. -CN. d. -CO_2CH_3.What three amino acids are part of the catalytic triad?Which of the following is ethylene? a) CH2 = CHCH3 b) CH2 = CH2 c) H-C = C-H d) CH3 - CH3...
Intraoperative quick parathyroid hormone versus same-day parathyroid hormone testing for minimally invasive parathyroidectomy: a cost-effectiveness study. Surgery 2001;130:963–70.10.1067/msy.2001.118376Search in Google Scholar PubMed 36. Chou FF, Lee CH, Chen JB, Hsu KT, Sheen-Chen SM. ...