Synthesis of 2-BMIDA 6,5-bicyclic heterocycles by Cu(<scp>i</scp>)/Pd(0)/Cu(<scp>ii</scp>) cascade catalysis of 2-iodoaniline/phenols
作者:Ciaran P. Seath、Kirsty L. Wilson、Angus Campbell、Jenna M. Mowat、Allan J. B. Watson
DOI:10.1039/c6cc04554e
日期:——
A one-pot cascade reaction for the synthesis of 2-BMIDA 6,5-bicyclic heterocycles has been developed using Cu(I)/Pd(0)/Cu(II) catalysis. 2-Iodoanilines and phenols undergo a Cu(I)/Pd(0)-catalyzed Sonogashira reaction with ethynyl BMIDA followed by...
Palladium‐Catalyzed Regioselective Synthesis of 1‐Hydroxycarbazoles Under Aerobic Conditions
作者:So Won Youn、Young Ho Kim、Yoon Hyung Jo
DOI:10.1002/adsc.201801265
日期:2019.2
A palladium‐catalyzed aerobic C−H amidation of N‐Ts‐2‐amino‐3′‐hydroxylbiaryls has been developed to afford a diverse range of 1‐hydroxycarbazoles with high regioselectivity and efficiency. This protocol benefits from operational simplicity, robustness, and sustainability with the use of ambient air as the sole terminal oxidant. Further elaboration of the products obtained from this process provides
A Pd‐catalyzed efficient reductive cross‐coupling reaction without metallic reductant to construct a Csp2Csp3 bond has been reported. A PdIV complex was proposed to be a key intermediate, which subsequently went through double oxidative addition and double reductive elimination to produce the cross‐coupling products by involving Pd0/II/IV in one transformation. The oxidative addition from PdII to
Efficient Access to 1,4-Benzothiazine: Palladium-Catalyzed Double C–S Bond Formation Using Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> as Sulfurating Reagent
A novel Pd-catalyzed double C–S bondformation coupling reaction has been developed. This protocol, in which Na2S2O3 was used as sulfurating reagent in metal-catalyzed reactions, provides an efficient method for the synthesis of substituted 1,4-benzothiazine derivates, which are structural elements of numerous bioactivity molecules rendering this protocol attractive to both synthetic and medicinal
已经开发了一种新型的钯催化的双C–S键形成偶联反应。该方案(其中Na 2 S 2 O 3用作金属催化反应中的硫化剂)为合成取代的1,4-苯并噻嗪衍生物提供了一种有效的方法,该衍生物是众多生物活性分子的结构元素,使该方案具有吸引力合成化学和药物化学。
A Cycloisomerization/Friedel–Crafts Alkylation Strategy for the Synthesis of Pyrano[3,4-<i>b</i>]indoles
作者:Matthew R. Medeiros、Scott E. Schaus、John A. Porco
DOI:10.1021/ol201532k
日期:2011.8.5
The synthesis of pyrano[3,4-b]indoles is described. The reaction sequence involves Sonogashira coupling of dihydropyran propargyl ether scaffolds with iodoanilines to afford intermediate indoles. Lewis acid-catalyzed ionization of the dihydropyrans, followed by intramolecular C3 alkylation of the indole, provides the title compounds.
描述了吡喃并[3,4- b ]吲哚的合成。反应序列涉及二氢吡喃炔丙基醚支架与碘苯胺的 Sonogashira 偶联,以提供中间体吲哚。二氢吡喃的路易斯酸催化电离,随后吲哚的分子内C3烷基化,提供标题化合物。