在[Ru(cymene)Cl 2 ] 2(10%)的催化下,苯甘氨酸衍生物(1a-1f)的N-未保护的甲基酯与富含电子的内部炔烃(2a-2e)的反应,得到相应的3,4-双取代的异喹啉-1-羧酸酯3通过C H / N H氧化偶合。C H键活化步骤由羧酸盐协助,并且三氟甲磺酸N-氟-2,4,6-三甲基吡啶鎓用作末端氧化剂。该方法显示出对氨基酸的苯环上存在各种释放电子和吸引电子的官能团的显着耐受性。此外,苯甘氨酸衍生物(1a–1f的反应在相同的实验条件下,用[Ru(cymene)Cl 2 ] 2(10%)催化的丙烯酸甲酯(4a),通过C H / N H偶合得到相应的3,N-二取代的异吲哚啉-1-羧酸酯5。以非对映异构体的混合物形式获得异二氢吲哚5,具有中等至高的非对映异构体过量值(最高80%)。
Aqueous Benzylic C–H Trifluoromethylation for Late-Stage Functionalization
作者:Shuo Guo、Deyaa I. AbuSalim、Silas P. Cook
DOI:10.1021/jacs.8b08547
日期:2018.10.3
The installation of trifluoromethylgroups has become an essential step across a number of industries such as agrochemicals, drug discovery, and materials. Consequently, the rapid introduction of this critical functional group in a predictable fashion would benefit current practitioners in those fields. This communication describes a mild trifluoromethylation of benzylic C-H bonds with high selectivity
of phenylglycinol derivatives with terminal and internalalkynes directed by picolinamide auxiliary has been developed. This method offers an efficient and highly regioselective route for the synthesis of 1-hydroxymethyltetrahydroisoquinolines. The reaction employs commercially available Co(II) catalyst in the presence of Mn(III) cooxidant and oxygen as a terminal oxidant, and proceeds with full preservation
Glyt1 Transporter Inhibitors and Uses Thereof in Treatment of Neurological and Neuropsychiatric Disorders
申请人:Dean Anthony William
公开号:US20080221185A1
公开(公告)日:2008-09-11
The invention provides a compound of formula (I) or a solvate thereof:
wherein R
1
, R
2
, R
3,
R
4
, R
5
, R
6
, and n are as defined in the specification, and uses of such compounds. The compounds inhibit GlyT1 transporters and are useful in the treatment of certain neurological and neuropsychiatric disorders, including schizophrenia.
An efficient method for the synthesis of 3-hydroxymethyl isoindolinones via cobalt-catalyzed C(sp2)–H carbonylation of phenylglycinol derivatives using picolinamide as a traceless directing group is demonstrated. The reaction proceeds in the presence of a commercially available cobalt(II) tetramethylheptanedionate catalyst and employs DIAD as a “CO” surrogate. This synthetic route offers a broad substrate
A highly efficient catalytic asymmetric Formal [3+2] cycloaddition reaction of 5-alkoxyoxazoles with azodicarboxylate compounds has been realized by a chiral N,N'-dioxide/Co(BF4)2.6H2O complex. A series of poly-substituted 1,2,4-triazolines compounds were obtained...