Traceless Directing Group Assisted Cobalt-Catalyzed C−H Carbonylation of Benzylamines
作者:Fei Ling、Chongren Ai、Yaping Lv、Weihui Zhong
DOI:10.1002/adsc.201700780
日期:2017.11.10
The first example of cobalt‐catalyzed C(sp2)−H carbonylation of benzylamines using a traceless directing group is reported, which was successfully applied to the synthesis of N−unprotected iso‐indolinones through direct C−H/N−H bonds activation. This protocol tolerates a variety of functional groups and provides a facile and efficient method for the formal synthesis of (+)‐garenoxacin.
报道了使用无痕导向基团的钴催化苄胺的C(sp 2)-H羰基羰基化的第一个实例,该实例已成功地用于通过直接CH / H / NH键活化而合成N-未保护的异吲哚啉酮。该方案可耐受多种官能团,并为(+)-加仑沙星的正式合成提供了一种简便而有效的方法。
A simple and convenient one-pot synthesis of substituted isoindolin-1-ones via lithiation, substitution and cyclization of <i>N'</i>-benzyl-<i>N,N</i>-dimethylureas
作者:Keith Smith、Gamal A El-Hiti、Amany S Hegazy、Benson Kariuki
DOI:10.3762/bjoc.7.142
日期:——
Lithiation of N'-benzyl-N,N-dimethylurea and its substituted derivatives with t-BuLi (3.3 equiv) in anhydrous THF at 0 °C followed by reaction with various electrophiles afforded a range of 3-substituted isoindolin-1-ones in high yields.
One-pot synthesis of substituted isoindolin-1-ones via lithiation and substitution of N′-benzyl-N,N-dimethylureas
作者:Keith Smith、Gamal A. El-Hiti、Amany S. Hegazy
DOI:10.1039/b926983e
日期:——
Lithiation of various Nâ²-benzyl-N,N-dimethylureas with t-BuLi (3.3 mole equivalents) in anhydrous THF at 0 °C followed by reactions with various electrophiles afforded the corresponding 3-substituted isoindolin-1-ones in high yields.
在 0 °C 的无水四氢呋喃中,用 t-BuLi(3.3 摩尔当量)锂化各种 Nâ²-苄基-N,N-二甲基脲,然后与各种亲电物反应,以高产率获得了相应的 3-取代异吲哚啉-1-酮。
Asymmetric hydrogenolysis of racemic tertiary alcohols, 3-substituted 3-hydroxyisoindolin-1-ones
Asymmetric hydrogenolysis of racemic tertiary alcohols, 3-substituted 3-hydroxyisoindolin-1-ones, was developed using chiral phosphoric acid as catalyst and a Hantzsch ester as the hydrogen source with up to 95% ee. The reaction process of this asymmetric transfer hydrogenation may occur directly through the acyliminium ion intermediate.
使用手性磷酸作为催化剂和 Hantzsch 酯作为氢源开发了外消旋叔醇(3-取代的 3-羟基异吲哚啉-1-酮)的不对称氢解,其 ee 高达 95%。这种不对称转移氢化的反应过程可以直接通过酰亚胺离子中间体发生。
INDANE COMPOUNDS AS CCR5 ANTAGONISTS
申请人:YOUNGMAN Michael
公开号:US20090187021A1
公开(公告)日:2009-07-23
The present invention relates to compounds of formula (I), or pharmaceutically acceptable derivatives thereof, useful in the treatment of CCR5-related diseases and disorders, for example, useful in the inhibition of HIV replication, the prevention or treatment of an HIV infection, and in the treatment of the resulting acquired immune deficiency syndrome (AIDS).