我们报道了使用 Mo(CO) 6作为羰基源的烯烃系链氨基甲酰氯的钯催化的氨基甲酰-氨基甲酰化/羧化/硫酯化。该反应通常以良好的官能团相容性和耐受不同的亲核试剂(胺、醇、酚、硫醇和水)进行,这为获得酰胺化/酯化/硫酯化/羧化羟吲哚或内酰胺提供了新途径无 CO 气体条件。此外,天然产物突变和不同的后期衍生化是重要的实用特征。
A 5 + 1 Protic Acid Assisted Aza-Pummerer Approach for Synthesis of 4-Chloropiperidines from Homoallylic Amines
作者:Rene Ebule、Sagar Mudshinge、Michael H. Nantz、Mark S. Mashuta、Gerald B. Hammond、Bo Xu
DOI:10.1021/acs.joc.8b03162
日期:2019.3.15
We report that HCl·DMPU induces the formation of (thiomethyl)methyl carbenium ion from DMSO under mild conditions. Homoallylic amines react with this electrophile to generate 4-chloropiperidines in good yields. The method applies to both aromatic and aliphatic amines. The use of HCl·DMPU as both non-nucleophilic base and chloride source constitutes an environmentally benign alternative for piperidine
The purpose of the present invention is to provide a compound having excellent antibacterial activity against
mycobacterium tuberculosis
, multidrug-resistant tuberculosis bacteria, and/or non-tuberculous acid-fast bacteria. A compound represented by formula [I]:
(in the formula, each symbol is as described in the attached specification), or a salt thereof can be used to diagnose, prevent, and/or treat tuberculosis.
Palladium(II)-catalyzed Amination of Isoprene with Aniline
作者:E. A. Petrushkina、N. E. Mysova、A. V. Orlinkov
DOI:10.1007/s11176-005-0344-5
日期:2005.6
reaction of isoprene with aniline, catalyzed by the Pd(acac)2-(RO)3P-CF3CO2H system, 1 : 4 : 4 [R = Me, Et; acac = (CH3CO)2CH], in MeCN provides N -(3-methylbut-2-en-1-yl)aniline with a high selectivity (up to 84%) and a nearly quantitative yield (75%). At 1 : 4 : 20 and 1 : 4 : 40 molar component ratios in the catalytic system, up to 28–31% of N,N -(2,3-dimethylprop-2-en-1-yl)aniline is formed. Telomeric
We report a palladium-catalyzed Heck-carbonylation of alkene-tethered carbamoyl chlorides by utilizing aryl formates as convenient CO surrogates. One C–O and two C–C bonds are constructed to give diversiform esterified oxindoles/γ-lactams bearing an all-carbon quaternary stereocenter under gas-free conditions. This transformation features a wide substrate scope and good functional group tolerance and
我们报道了利用芳基甲酸作为方便的 CO 替代物,钯催化的烯烃束缚的氨基甲酰氯的 Heck 羰基化反应。构建一个 C-O 和两个 C-C 键,可在无气体条件下产生带有全碳四元立构中心的多种酯化羟吲哚/γ-内酰胺。该转化具有较宽的底物范围和良好的官能团耐受性,可以轻松应用于后期功能化。
Palladium-catalyzed Heck/aminocarbonylation of alkene-tethered carbamoyl chlorides with nitro compounds for the synthesis of carbamoyl-substituted oxindoles
A straightforward and efficient approach for the synthesis of carbamoyl-substituted oxindoles has been developed via a palladium-catalyzed Heck cyclization and reductive aminocarbonylation reaction of alkene-tethered carbamoyl chlorides with nitro compounds. The reaction showed good compatibility toward versatile functional groups, and both nitroarenes and nitroalkanes were well tolerated. Using Mo(CO)6