Zinc(II)-Catalyzed Synthesis of Propargylamines by Coupling Aldimines and Ketimines with Alkynes
作者:Syeda Aaliya Shehzadi、Aamer Saeed、Filip Lemière、Bert U. W. Maes、Kourosch Abbaspour Tehrani
DOI:10.1002/ejoc.201701567
日期:2018.1.10
Imines derived from unactivated aldehydes or ketones and primary amines or α‐amino acid esters have been shown to undergo a ZnII‐catalyzed reaction with a variety of terminal alkynes to give secondary propargylamines that have tri‐ and tetrasubstituted α‐carbon atoms (from aldimines and ketimines, respectively).
Synthesis and Biological Evaluation of Novel Isopropanolamine Derivatives as Non-peptide Human Immunodeficiency Virus Protease Inhibitors
作者:Lijun Zhou、Qingang Yang、Yong Wang、Youhong Hu、Xiaomin Luo、Donglu Bai、Shukun Li
DOI:10.1248/cpb.56.1147
日期:——
Novel potentialhumanimmunodeficiency virus (HIV) proteaseinhibitors were designed by a combination of nelfinavir and amprenavir motifs. The designed compounds were prepared by a facile synthetic route and their stereochemistry was further confirmed by a stereospecific synthesis from commercially available (S)-2-oxiranylmethyl m-nitrobenzenesulfonate. All compounds were tested for their ability in
Direct and Stereoselective Synthesis of Diversely Substituted 2,4-<i>trans</i>-(NH)-Pyrrolidines by Copper(I)-Catalyzed Radical Cyclization at Low Temperature
作者:Ram N. Ram、Dharmendra Kumar Gupta
DOI:10.1002/adsc.201600844
日期:2016.10.20
applications of the products in the preparation of useful 4‐chloro‐NH‐pyrrole in a single step, has also been demonstrated. A quick, mild and general method involving simple addition of trichloroacetic acid/dimethyl sulfoxide (CCl3CO2H‐DMSO) solution to readily accessible N‐allylaldimines and ketimines tolerating acid‐sensitive and highly deactivating substituents was developed to access the amine precursors.
这项工作描述了带有未保护的NH-基团的β-卤代乙基烯丙基胺在铜(I)催化下的自由基环化成功,同时保持了催化剂的氧化还原活性。环化在0°C时发生区域和非对映选择性,并直接以高分离产率提供不同取代的1,3-反式-(NH)-吡咯烷。提出了庞大的铜络合物参与环化步骤,这可能是非对映选择性的可能原因。还证明了该产品在一步制备有用的4-氯-NH-吡咯中的合成应用。一种快速,温和且通用的方法,包括将三氯乙酸/二甲亚砜(CCl 3 CO 2 H-DMSO)溶液简单地添加到易于获取的N中开发了可耐受酸敏感性和高度失活的取代基的烯丙醛和酮亚胺,以获取胺前体。
Generation of molecular diversity using a complexity-generating MCR-platform towards triazinane diones
作者:Bas Groenendaal、Eelco Ruijter、Frans J. J. de Kanter、Martin Lutz、Anthony L. Spek、Romano V. A. Orru
DOI:10.1039/b807138a
日期:——
Triazinane diones, readily generated by a recently reported multicomponent reaction, can be easily alkylated with various alkyl halides, allowing a wide variety of complexity-generating secondary reactions. Because of the high variability of the initial multicomponent reactions and the multiple possibilities for participation of substituents in the secondary reactions, a highly diverse set of complex products was obtained in short and efficient reaction sequences.