Oxidative Palladium(II)-Catalyzed C-7 Alkenylation of Indolines
作者:Lin-Yu Jiao、Martin Oestreich
DOI:10.1021/ol402687t
日期:2013.10.18
A mild procedure for C-7-selective C–H alkenylation of various indolines under oxidative palladium(II) catalysis is reported. A fully substituted urea, formed by carbamoylation of the indoline nitrogen atom, functions as a directing group. Both α,β-unsaturated acceptors and styrenes participate in this direct C–H functionalization. With a free NH group at the urea terminus, the nitrogen atom subsequently
Indoles, indolines and hydronaphthylamines are ubiquitous structural motifs in natural products, pharmaceuticals, and biologically active molecules. In this paper, we report the synthesis of aminodihydronaphthyl-substituted indoles and indolines via a Ru-catalyzed carbamoyl-directed C–H functionalization of indoles and indolines with 7-azabenzonorbornadienes. In the presence of Cu(OAc)2 and AgSbF6
biologically essential pyrroloquinolinones has been developed under Cp*CoIII catalysis, which involves a cascade reaction of C(7)–H alkenylation with alkynes followed by nucleophilic addition. A wide variety of internal alkynes including enyne, diyne, and ynamide and more challenging terminalalkynes were successfully employed for the annulation in good to excellent yield with high regioselectivity.
Manganese(III) Acetate Catalyzed Aerobic Dehydrogenation of Tertiary Indolines, Tetrahydroquinolines and an
<i>N</i>
‐Unsubstituted Indoline
作者:Xiaokang Niu、Lei Yang
DOI:10.1002/adsc.202100581
日期:2021.9.7
A Mn(OAc)3 ⋅ 2H2O-catalyzed aerobic dehydrogenation of five and six-membered N-heterocycles for the synthesis of N-heteroarenes is reported. Of note, this protocol can be applied to the dehydrogenation of tertiary indolines with various electron-deficient N-substituents. Preliminary mechanistic investigations support that a single-electron transfer pathway might be involved.
报道了Mn(OAc) 3 ⋅ 2H 2 O 催化的五元和六元N-杂环有氧脱氢反应,用于合成N-杂芳烃。值得注意的是, 该协议可应用于具有各种缺电子N取代基的叔二氢吲哚的脱氢。初步机理研究支持可能涉及单电子转移途径。