Through the oxidative addition of cobalt into the N-C(O) bond of phthalimide and the subsequent decarbonylation, we describe an efficient cobalt-catalyzed intermolecular decarbonylative carboamidation of alkynes. High regioselectivities have been achieved for unsymmetrical alkynes (including aryl-alkyl or aryl-aryl) to deliver polysubstituted isoquinolones. To facilitate step economy, a three-component
A copper-catalyzed oxidative cyclization procedure has been developed for the production of 2-sulfonated 9H-pyrrolo[1,2-a]indol-9-ones via the direct sulfonylation of N-propargyl-substituted indoles with sulfonylhydrazides and tert-butyl hydroperoxide (TBHP). This novel protocol, which tolerates a broad range of functional groups, offers a simple, efficient, and atom-economical route to a series of
已经开发了一种铜催化的氧化环化程序,用于通过磺酰肼和叔丁基直接将N-炔丙基取代的吲哚进行磺酰化来生产2-磺化的9 H-吡咯并[1,2 - a ]吲哚-9-酮。氢过氧化物(TBHP)。这种新颖的方案可耐受多种官能团,在温和的条件下,以高收率提供了一系列简单,高效且原子经济的途径来合成一系列芴酮。
Photoredox-catalyzed cascade annulation of <i>N</i>-propargylindoles with sulfonyl chlorides: access to 2-sulfonated 9<i>H</i>-pyrrolo[1,2-<i>a</i>]indoles
cascade radical reaction of N-propargylindoles and sulfonyl chlorides to 2-sulfonated 9H-pyrrolo[1,2-a]indoles was described. By the direct use of commercially available sulfonyl chlorides as radical precursors, this transformation proceeded smoothly to afford the corresponding products in moderate to good yields under external oxidant-free conditions at room temperature.
描述了N-炔丙基吲哚和磺酰氯的光氧化还原催化的级联自由基反应,生成2-磺化的9 H-吡咯并[1,2- a ]吲哚。通过直接使用可商购的磺酰氯作为自由基前体,该转化顺利进行,从而在室温下在无外部氧化剂的条件下以中等至良好的产率获得了相应的产物。
Iodide‐Catalyzed Phosphorothiolation of Heteroarenes Using P(O)H Compounds and Elemental Sulfur
Organothiophosphates have found widespread application as biologicallyactivecompounds and synthetic intermediates in medicinal chemistry. The first transition‐metal‐free one‐pot direct synthesis of heterocyclic phosphorothioates involving indole or imidazo[1,2‐a]pyridine derivatives, elemental sulfur, and P(O)H compounds is presented. The use of NaI or KI as a catalyst, tert‐butyl hydroperoxide as
One‐Pot Two‐Step Double Annulation of
<i>N</i>
‐Methoxybenzamides with Alkynes and Alkenes: Regioselective Construction of Isoindolo[2,1‐
<i>b</i>
]isoquinolin‐5(7
<i>H</i>
)‐ones
one-pot two-step doubleannulation strategy to produce isoindolo[2,1-b]isoquinolin-5(7H)-ones via the reaction of N-methoxybenzamides with symmetrical/unsymmetrical alkynes and alkenes has been developed, which proceeds through Ru-catalysed unsymmetrical doubleannulations using a single DG under single catalytic conditions. Furthermore, we have developed amide-alkyne regioselective annulations using unsymmetrical
的单釜两步双环策略以产生异吲哚基[2,1- b ]异喹啉-5(7 ħ) -酮通过的反应Ñ -methoxybenzamides具有对称/不对称炔烃及烯烃已经被开发,其通过进行在单一催化条件下使用单一 DG 进行 Ru 催化的不对称双环化。此外,我们使用不对称的内部炔烃开发了酰胺-炔烃区域选择性环化,该炔烃具有导致单一异构体的氧/氮取代基。所开发的程序提供了广泛的底物范围,容忍了广泛的官能团,并提供了良好的产品收率。