One‐Pot Synthesis of Indoles from Aniline and α,β‐Ynones through an Iodine‐Mediated Transition‐Metal‐Free Tandem aza ‐Michael addition/C−H Functionalization

2019 ◽  
Vol 8 (4) ◽  
pp. 482-486 ◽  
Author(s):  
Jie Su ◽  
Kan Zhang ◽  
Mengyuan Zhuang ◽  
Fuyu Ma ◽  
Wei‐Qiang Zhang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Michael Addition ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis

ChemInform Abstract: Transition Metal Free Intramolecular S-Arylation: One-Pot Synthesis of Thiochromen-4-ones.

ChemInform ◽  
2014 ◽  
Vol 45 (13) ◽  
pp. no-no
Author(s):  
T. A. Jenifer Vijay ◽  
Kebbahalli N. Nandeesh ◽  
Goravanahalli M. Raghavendra ◽  
Kanchugarakoppal S. Rangappa ◽  
Kempegowda Mantelingu
Keyword(s):  
Transition Metal ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis

One-pot synthesis of thioesters with sodium thiosulfate as a sulfur surrogate under transition metal-free conditions

2018 ◽  
Vol 16 (11) ◽  
pp. 1871-1881 ◽  
Author(s):  
Yen-Sen Liao ◽  
Chien-Fu Liang
Keyword(s):  
Transition Metal ◽  
Sodium Thiosulfate ◽  
Sulfur Source ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis

We have developed a one-pot reaction to provide thioester derivativesviasodium thiosulfate as a sulfur source under transition metal-free conditions.

Direct Propargylation of ortho-Quinone Methides with Alkynyl Zinc Reagents: An Application to the One-Pot Synthesis of 2,3-Disubstituted Benzofurans

Synlett ◽  
2020 ◽  
Vol 31 (08) ◽  
pp. 818-822
Author(s):  
Hongjun Ren ◽  
Manman Sun ◽  
Jinyu Song ◽  
Lei Wang ◽  
Wenguang Yin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Functional Group ◽  
Quinone Methides ◽  
One Pot ◽  
Metal Free ◽  
Efficient Strategy ◽  
One Pot Synthesis ◽  
Subsequent Cyclization ◽  
The One

A transition-metal-free propargylation of ortho-quinone methides (o-QMs) with alkynyl zinc reagents was achieved. A conjugate alkynylation of an o-QM and subsequent cyclization sequence in the presence of KOt-Bu for the synthesis of 2,3-disubstituted benzofurans in one pot was developed. This efficient strategy exhibits good functional-group compatibility and gives moderate to good yields. The present reaction might serve as an attractive method for the synthesis of polysubstituted benzofurans.

scholarly journals Et3N/DMSO-supported one-pot synthesis of highly fluorescent β-carboline-linked benzothiophenones via sulfur insertion and estimation of the photophysical properties

2020 ◽  
Vol 16 ◽  
pp. 1740-1753 ◽  
Author(s):  
Dharmender Singh ◽  
Vipin Kumar ◽  
Virender Singh
Keyword(s):  
Transition Metal ◽  
Elemental Sulfur ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
One Pot ◽  
Light Emitting ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy ◽  
Reaction Proceeds

A robust transition-metal-free strategy is presented to access novel β-carboline-tethered benzothiophenone derivatives from 1(3)-formyl-β-carbolines using elemental sulfur activated by Et3N/DMSO. This expeditious catalyst-free reaction proceeds through the formation of β-carboline-based 2-nitrochalcones followed by an incorporation of sulfur to generate multifunctional β-carboline-linked benzothiophenones in good to excellent yields. The synthetic strategy could also be extended towards the synthesis of β-carboline-linked benzothiophenes. Moreover, the afforded products emerged as promising fluorophores and displayed excellent light-emitting properties with quantum yields (ΦF) up to 47%.

Transition-metal-free, one-pot synthesis of Benzoxaboroles from o-bromobenzaldehydes via visible-light-promoted borylation

2021 ◽  
Author(s):  
Jinghan Luo ◽  
Xingxing Jia ◽  
Yanjun Hu ◽  
Jianchao Chen ◽  
Tiemin Sun
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Synthetic Method ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Stepwise Method

A novel and simple one-pot stepwise method to synthesize benzoxaboroles was demonstrated. This step-by-step synthetic method includes photocatalytic boronization with phenothiazine as photocatalyst and sequencely water-induced reduction in the presence...

Aryne insertion into the PO bond: one-pot synthesis of quaternary phosphonium triflates

2019 ◽  
Vol 17 (26) ◽  
pp. 6450-6460 ◽  
Author(s):  
Kashmiri Neog ◽  
Dhiraj Dutta ◽  
Babulal Das ◽  
Pranjal Gogoi
Keyword(s):  
Transition Metal ◽  
Phosphine Oxide ◽  
Direct Synthesis ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A novel transition-metal free synthetic strategy for the direct synthesis of quaternary phosphonium triflates via insertion of aryne into phosphine oxide.

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