2011年6月10日 · In contrast, NBS (N-bromo succinimide) is a gleaming white crystalline solid and easy as pie to work with. But don’t be deceived. It packs a punch. It will do many of the same …

2019年10月18日 · NBS was usually used in an acidic condition (AcOH–H 2 O) and inevitably produced the corresponding stoichiometric succinimide byproduct that required immediate …

2017年5月5日 · With NBS/$\ce{CCl4}$ allylic bromination occurs. But with NBS/$\ce{AcOH}$ bromination occurs on the alkene double bond. Why does this difference occur and how? I.e …

Highly regioselective nuclear bromination of activated aromatic and heteroaromatic compounds has been accomplished using N-bromosuccinimide in tetrabutyl ammonium bromide.

NBS was usually used in an acidic condition (AcOH → –H2O) and inevitably pro-duced the corresponding stoichiometric succinimide byproduct that required immediate elimination by …

Bromination of 2,5-bis(2-thienyl)pyrrole with NBS in AcOH–THF prefers the β-position of pyrrole over the α-position of thiophene. A DFT study and experiments in different solvent systems …

2007年12月10日 · Use of NBS for nuclear bromination in polar media such as DMF, 13a MeCN, 13 (b), 13 (c) aqueous NaOH, 13d in the presence of acids, 13 (e), 13 (f), 13 (g) and …

nbs溴代一般用卤代烃做反应溶剂，二氯甲烷、四氯化碳等，回流或室温都可以，生成的丁二酰亚胺不溶，漂浮在液面，过滤就可了。 可以联系我，跟我说说这个反应的反应机理

2025年1月23日 · 以下是一个具体的案例：通过NBS对化合物9进行溴代，制备得到化合物11，随后利用NMO对苄基溴进行氧化，最终得到醛4。 采用MeCN或IPAc替代四氯化碳，产物11能 …

1974年1月1日 · Brominations of 3-phenylindole ( 1a) and its 1-methyl- ( 1b) and 1-acetyl- ( 1c) derivatives with NBS in AcOH and CCl 4 have been carried out. In AcOH 1 gave 2-bromo …