论文部分内容阅读
N-heterocyclic carbenes(NHCs) have been demonstrated as efficient organocatalysts for a wide variety of reactions in recent years.
Enantioselective N-heterocyclic Carbene-Catalyzed Synthesis of Trifluoromethyldihydropyridinones
【摘 要】
：
N-heterocyclic carbenes(NHCs) have been demonstrated as efficient organocatalysts for a wide variety of reactions in recent years.
【机 构】
：
Marine College,Shandong University at Weihai,180 Wenhua West Road,Weihai 264209;China and Beijing Na
【出 处】
：
中国化学会第九届全国有机化学学术会议
【发表日期】
：
2015年7期
其他文献
Herein,we describe a DABCO-catalyzed [2+2] annulation reaction of allenoates with azodicarboxylates which affords 3-alkylidene-1,2-diazetidines in moderate yields and excellent stereo-and regioselecti
会议
Rh(Ⅲ)-Catalyzed Chelation-Assisted Intermolecular Carbenoid Functionalization of α-Imino Csp3-H Bond
Carbon-carbon bond-forming reactions are most important transformation in modern organic chemistry.
会议
氮杂三元环(吖丙啶)的不对称开环反应是制备含氮手性化合物的重要方法,也是具有非常大的挑战性的课题之一.本领域中,前人研究所取得的成功的例子主要局限在对于内消旋吖丙啶(meso-aziridines)去对称化反应的研究上,[1] 而对于2-取代的吖丙啶的不对称反应的成功例子很少,且使用简单手性Lewis 酸催化的体系更未见报道.
会议
Electrophilic α-cyanation toward α-cyano β-keto carbonyl compounds bearing a quaternary carbon cente
Recently,the direct electrophilic α-cyanation of β-keto esters or amides(1)has been accomplished using active hypervalent iodine cyano reagent(C1)which was prepared in our laboratory.
三唑类含能化合物,具有高氮、低碳氢的特点,是一类重要的含能化合物[1-3].4,4′-联-1,2,4-三唑(BTz)是由两个1,2,4-三唑环由4 位的N-N 键连接而成的化合物,可以通过在3,5 位的C进一步引入含能基团拓展BTz 在含能方面的应用.
会议
多取代氢吡咯结构广泛存在于天然产物和药物中间体,[1] 由于这类化合物特殊的分子结构以及强效的生物活性,因此,对这类化合物的高效合成以及生物活性的研究成为了研究的热点.
会议
N-Heterocyclic Carbene-Catalyzed [2+3] Cyclocondensation of α-Chloroaldehydes with Azomethine Imines
Over the past decades,N-heterocyclic carbenes(NHCs) have been found to be efficient catalysts for a wide variety of reactions.
会议
The study on the application of a new class of chiral 1,4-dimine catalysts to the catalytic asymmetr
Chiral diamine ligand is one of the most important ligands in asymmetric catalytic reaction.Among them,the majority is about 1,2-diamine[1] and about 1,4-diamine[2] is rarely seen reports.Enantioselec
Grignard reagents can be directly prepared from organohalides and play an important role in organic synthesis.
会议