论文信息 Metal-Free and NBS-Mediated Direct Thiol-Disulfide Exchange Reaction to Access Unsymmetrical Disulfides Prof. Dr. Ke Yang, Qingyue Hu, Qin Li, Junxiang Liu, Zheng-Yi Li, Prof. Dr. Bijin Li, Prof. Dr. Xiaoqiang Sun European Journal of Organic Chemistry DOI: 10.1002/ejoc.20...
cascade reactionchromane-3,4-dioneAn unusual NBS promoted cascade reaction of 尾-anhydroicaritine and alcohols was successfully developed to prepare chromane-3,4-dione 3 in a moderate yield. A mechanism was also put forward to explain this reaction. These chromane-3,4-dione derivatives showed ...
CHINESEJOURNALOFAPPLIEDCHEMISTRY V o1.24No.1 Jan.2O07 NBS与取代苯的亲电反应及其应用 冯娟.罗啸穆云.刘守信 (.河北科技大学化学与制药工程学院石家庄050018;河北大学化学与环境科学学院保定)摘要选取含不同取代基的甲苯在不同条件下与NBS反应,考察了溶剂极性,取代基的电子效应和温度等 因素对反应结果的影响....
CollegeofChemistryandEnvironmentScience,ItebeiUnhersity,Baoding) AbstractToluenewithdifferentsubstitutedgroupwasselectedtoreactwithNBSunderdiffentconditions. Thefactorsthateffectreactionincludingthepolarityofsolvent,theelectroneffectofaugstituteedgroupand reactiontemperaturewerediscussed.Theresultsindicatedthattheregioselectivity...
In the Wohl-Ziegler reaction (bromination at allylic positions via a radical pathway).To synthesize benzils and aliphatic 1,2-diketones from hydrobenzoins and 1,2-diols in the presence of CCl4 as a solvent.To prepare tricyclic azepino[4,5-b]indoles from indole-β-enaminoesters or β-...
Reaction of 2-Methoxy-3H-azepine with NBS:? Efficient Synthesis of 2-Substituted 2H-Azepines. Christopher E. J. Cordonier,Kyosuke Satake,Mikihiko Atarashi,Yousuke Kawamoto,Hideki Okamoto,Masaru Kimura. Journal of Organic Chemistry . 2005Reaction of 2-methoxy-3H-azepine with NBS: Efficient ...
Reference [1] Rostami, Amin , and H. Jafari . "NBS as a powerful catalyst for the synthesis of β-hydroxysulphides with thiolysis of epoxides under mild reaction conditions : research article." South African journal of chemistry. Suid-Afrikaanse tydskrif vir chemie 61(2008):115-118. 分享...
Regular Member Posts: 92 Mole Snacks: +2/-21 Gender: Chemistry lover Re: NBS Reactions « Reply #13 on: January 29, 2013, 04:11:04 PM » The more stable alkene, involving migration of double bond is the major product at room temperature. The products in your original question ma...
What is NBS in organic chemistry?BrominationAllylic bromination is a substitution reaction involving a hydrogen attached to the carbon adjacent to a double bond with a bromine atom.Answer and Explanation: N-bromosuccinimide (NBS) is a common source of bromine in allylic bromination. It is often ...
College of chemistry, central china normal university, wuhan 430079, P. R. China Abstract: An efficient, microwave-assisted dehydrogenation of flavanones with N -bromosuccinimide has been developed. Compared with the Conventional heating, the reaction by microwave irradiation gave the desired compounds...