Au-Catalyzed Synthesis of Thiopyrano[2,3-<i>b</i>]indoles Featuring Tandem Rearrangement and Hydroarylation
作者:Mukund Jha、Shiv Dhiman、T. Stanley Cameron、Dalip Kumar、Anil Kumar
DOI:10.1021/acs.orglett.7b00617
日期:2017.4.21
heteroaromatic thiopyrano[2,3-b]indole is reported using conjugated enyne tethered indole sulfides, featuring skeletal rearrangement conjoined with intramolecular hydroarylation (via C3–H functionalization of the indole core) and oxidative aromatization. Subsequent Pd-catalyzed C–C coupling resulted in a 16-π electron heteroaromatic isothiochromeno[1,8,7-bcd]indole.
据报道,使用共轭烯键式吲哚硫化物进行金(III)催化的14-π电子杂芳族硫吡喃并[2,3- b ]吲哚的合成,其骨架重排与分子内氢芳基化作用(通过吲哚核的C3-H功能化)和氧化芳构化。随后的Pd催化的C–C偶联导致16-π电子杂芳族异硫氰酸色素[1,8,7- bcd ]吲哚。
Synthesis of Indole Derivatives by [2 + 2] Photocycloaddition of Indoline-2-thiones with alkenes and photodesulfurization of indoline-2-thiones
作者:Takehiko Nishio、Mitsuru Oka
DOI:10.1002/hlca.19970800205
日期:1997.3.24
The photochemical synthesis of indolederivatives starting from the indoline-2-thiones 1 is described. Irradiation of indoline-2-thiones 1 in the presence of alkenes 3 gave 2-alkyl-3H-indoles 4–7 or 2-alkylindoles 8–22 through the ring cleavage of the intermediates, spirocyclic amino-thietanes, initially derived by [2 + 2] cycloaddition of the CS bond of 1 and the CC bond of 3. Irradiation of 1 in
N-Heterocyclic Carbene-Catalyzed [3+3] Annulation of Indoline-2-thiones with Bromoenals: Synthesis of Indolo[2,3-<i>b</i>]dihydrothiopyranones
作者:Liang Yi、Kun-Quan Chen、Zhi-Qin Liang、De-Qun Sun、Song Ye
DOI:10.1002/adsc.201600726
日期:2017.1.4
The N‐heterocyclic carbene‐catalyzed [3+3] annulation of indoline‐2‐thiones and bromoenals has been developed, giving the corresponding indolo[2,3‐b]dihydrothiopyranones in high yields.
已开发出N-杂环卡宾催化的吲哚-2-硫酮和溴代烯环化[3 + 3]环化反应,从而以高收率得到了相应的吲哚[2,3- b ]二氢硫代吡喃酮。
Reduction of Indolin-2-ones and Desulfurization of Indoline-2-thiones to Indoline and Indole Derivatives
作者:Takehiko Nishio、Norikazu Okuda、Choji Kashima
DOI:10.1002/hlca.19900730616
日期:1990.9.19
Reduction of indolin-2-ones with lithium aluminium hydride (LAH) or diisobutylaluminum hydride (DIBAL) and desulfurization of indoline-2-thiones with Raney-Ni were investigated. Treatment of indoline-2-ones 1 with LAH or DIBAL yield indoles 4 and/or indolines 3 in moderate-to high yield depending on the substituents at N and C(3) of 1. Indoline-2-thiones 2 were desulfurized with Raney-Ni to give indoles
Synthesis of functionalized 2-salicyloylfurans, furo[3,2-b]chromen-9-ones and 2-benzoyl-8H-thieno[2,3-b]indoles by one-pot cyclizations of 3-halochromones with β-ketoamides and 1,3-dihydroindole-2-thiones
作者:Iryna Savych、Tim Gläsel、Alexander Villinger、Vyacheslav Ya. Sosnovskikh、Viktor O. Iaroshenko、Peter Langer
DOI:10.1039/c4ob01730g
日期:——
Domino reactions of 3-halochromones with β-ketoamides and 1,3-dihydroindole-2-thiones provided a convenient approach to various heterocyclic systems.