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Search for "photoinduced reaction" in Full Text gives 7 result(s) in Beilstein Journal of Organic Chemistry.

Recent advances in transition-metal-free arylation reactions involving hypervalent iodine salts

  • Ritu Mamgain,
  • Kokila Sakthivel and
  • Fateh V. Singh

Beilstein J. Org. Chem. 2024, 20, 2891–2920, doi:10.3762/bjoc.20.243

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  • assist in the deprotonation of intermediate II to produce final products 27, while K2S2O8 aids in the oxidation of the photocatalyst in the case of pyridine N-oxide. In another photoinduced reaction procedure, Murarka et al. reported the formation of aryl radicals from a tetrameric electron donor
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Review
Published 13 Nov 2024

Efficacy of radical reactions of isocyanides with heteroatom radicals in organic synthesis

  • Akiya Ogawa and
  • Yuki Yamamoto

Beilstein J. Org. Chem. 2024, 20, 2114–2128, doi:10.3762/bjoc.20.182

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  • displacement of the PhTe group with the PhS group afford 23. Furthermore, the photoinduced reaction of ortho-ethenylaryl isocyanides with bis(2-aminophenyl) disulfides affords tetracyclic compounds 24 in a single step. Not only alkynyl and alkenyl groups, but also heteroatom moieties such as azido and sulfide
  • acid [58]. Rainier et al. reported the thiol-mediated 5-exo cyclization of o-alkynylaryl isocyanides, which successfully afforded dithiolated indoles 22 (Scheme 15) [59]. However, depending on the reaction conditions, quinoline derivatives were also produced as byproducts (vide infra). The photoinduced
  • reaction of o-ethenylaryl isocyanides with disulfides in the presence of diphenyl ditelluride yields the corresponding dithiolated indole derivatives 23 (Scheme 16) [60]. Initially, the thiotelluration products via 5-exo cyclization are formed in situ. The subsequent aromatization followed by photoinduced
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Perspective
Published 26 Aug 2024

Highly regio- and stereoselective phosphinylphosphination of terminal alkynes with tetraphenyldiphosphine monoxide under radical conditions

  • Dat Phuc Tran,
  • Yuki Sato,
  • Yuki Yamamoto,
  • Shin-ichi Kawaguchi,
  • Shintaro Kodama,
  • Akihiro Nomoto and
  • Akiya Ogawa

Beilstein J. Org. Chem. 2021, 17, 866–872, doi:10.3762/bjoc.17.72

Graphical Abstract
  • using a radical initiator such as 1,1'-azobis(cyclohexane-1-carbonitrile) (V-40) (Scheme 1a) [45] or upon photoirradiation (Scheme 1b) [38] yields vic-bis(diphenylphosphino)alkenes in good yields. Unfortunately, this photoinduced reaction of Ph2PPPh2 was not applicable to alkenes [42]. To change the
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Published 20 Apr 2021

Dialkyl dicyanofumarates and dicyanomaleates as versatile building blocks for synthetic organic chemistry and mechanistic studies

  • Grzegorz Mlostoń and
  • Heinz Heimgartner

Beilstein J. Org. Chem. 2017, 13, 2235–2251, doi:10.3762/bjoc.13.221

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  • radical intermediate 46 governs the formal [4 + 2]-cycloaddition reaction of E-1b with 3,4-di(α-styryl)furan (47, Scheme 15). The photoinduced reaction occurs via an electron-transfer (PET) process and led to the formation of the polycyclic product 48 in a stereospecific manner [52]. Similar products were
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Published 24 Oct 2017

Photoinduced 1,2,3,4-tetrahydropyridine ring conversions

  • Baiba Turovska,
  • Henning Lund,
  • Viesturs Lūsis,
  • Anna Lielpētere,
  • Edvards Liepiņš,
  • Sergejs Beljakovs,
  • Inguna Goba and
  • Jānis Stradiņš

Beilstein J. Org. Chem. 2015, 11, 2166–2170, doi:10.3762/bjoc.11.234

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  • . Photoinduced reaction of 1 in O2 saturated CHCl3 under irradiation by intensive sunlight. Heterocycle transformations of 1 in air saturated CHCl3 solutions. Proposed mechanism of conversion of oxaziridine 4 to 5. Supporting Information Synthesis and characterization of all products, copies of 1H and 13C NMR
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Letter
Published 11 Nov 2015

Photoinduced synthesis of unsymmetrical diaryl selenides from triarylbismuthines and diaryl diselenides

  • Yohsuke Kobiki,
  • Shin-ichi Kawaguchi,
  • Takashi Ohe and
  • Akiya Ogawa

Beilstein J. Org. Chem. 2013, 9, 1141–1147, doi:10.3762/bjoc.9.127

Graphical Abstract
  • absence of transition-metal catalysts. A variety of unsymmetrical diaryl selenides can be conveniently prepared by using this arylation method. Keywords: arylation; unsymmetrical diaryl selenide; free radical; organobismuth; photoinduced reaction; Introduction A number of organoselenium compounds are
  • ). In 1999, Barton and co-workers reported that diaryl selenide was obtained by the reaction of triarylbismuthine with diphenyl diselenide under heating at high temperature (140 °C) [65], but the photoinduced reaction was not investigated. In this letter, we will report the radical reaction of diaryl
  • diselenides with triarylbismuthines from the viewpoint of a photoinduced reaction in the synthesis of unsymmetrical diaryl selenides. Results and Discussion First, we investigated the photoinduced reaction of diphenyl diselenide with triphenylbismuthine. Diphenyl diselenide (1a, 0.1 mmol) and
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Published 13 Jun 2013

Towards a biocompatible artificial lung: Covalent functionalization of poly(4-methylpent-1-ene) (TPX) with cRGD pentapeptide

  • Lena Möller,
  • Christian Hess,
  • Jiří Paleček,
  • Yi Su,
  • Axel Haverich,
  • Andreas Kirschning and
  • Gerald Dräger

Beilstein J. Org. Chem. 2013, 9, 270–277, doi:10.3762/bjoc.9.33

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  • 2 with a methanolic solution of nitrene precursor 3, and then drying followed by UV irradiation (Hg lamp, 254 nm) initially did not lead to surface modification. The presence of F and N on the TPX membrane was not detectable by XPS analysis. The photoinduced reaction of azide 3 with cyclohexane
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Published 08 Feb 2013
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