An efficient reaction between triphenylphosphine or triphenyl phosphite and 2-oxoindoline-3-ylidene derivatives in the presence of acetylenic esters leads to functionalized 2-oxoindoline-3-ylidene containing phosphorus ylieds or phosphonate esters. All compounds obtained in these reactions are stable and have good yields.
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http://dx.doi.org/10.1038/s41598-024-56774-z | DOI Listing |
Sci Rep
March 2024
Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
An efficient reaction between triphenylphosphine or triphenyl phosphite and 2-oxoindoline-3-ylidene derivatives in the presence of acetylenic esters leads to functionalized 2-oxoindoline-3-ylidene containing phosphorus ylieds or phosphonate esters. All compounds obtained in these reactions are stable and have good yields.
View Article and Find Full Text PDFSe Pu
January 2024
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
J Am Soc Mass Spectrom
May 2023
Biocon Bristol Myers Squibb Research & Development Centre (BBRC), Bristol-Myers Squibb, Bangalore 560099, India.
A mechanism of unusual tandem (MS/MS) fragmentation of protonated species of -(triphenyl-λ-phosphanylidene) derivatives, [M + H] to generate triphenylphosphine oxide (TPPO) within the mass spectrometer has been investigated and reported. Collision-induced dissociation of these molecules resulted in the generation of TPPO as a signature fragment. This fragment suggested the presence of a P-O bond in the structure which was contrary to the structure of the compound identified by nuclear magnetic resonance spectrometry (NMR) and single-crystal X-ray diffractometry (SXRD) techniques with a P═N bond rather than a P-O bond.
View Article and Find Full Text PDFACS Omega
September 2022
Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
New 1,4-naphthoquinone derived by triphenylphosphaneylidene (PhP) and -substituted-hydrazine-1-carbothioamides were obtained during a one-pot reaction of 2,3-dichloro-1,4-naphthoquinone with thiosemicarbazides, PhP and in the presence of triethyl amine (EtN) as a catalyst. The structure of the ligands was established by ESI, IR, and NMR spectra, in addition to elemental analyses and X-ray structure analysis. On subjecting the newly prepared ligands with CuCl and PhP, autoxidation occurs, and ()-(2-(1,4-dioxo-3-(triphenyl phosphanylidene)-3,4-dihydronaphthalen-2(1)-ylidene)carbamothioyl)hydrazinyl)-((triphenylphosphanyl)oxy)copper derivatives were formed in very good yields.
View Article and Find Full Text PDFJ Photochem Photobiol B
October 2022
Institute of Nanotechnology Innovation, P.O. 94, Rhodes University, Makhanda, South Africa. Electronic address:
This work reports on the reactive oxygen species (ROS) generation and the therapeutic activities of new triphenyl-phosphonium-labelled phthalocyanines (Pcs), the 2,9,16,23-tetrakis(N-(N-butyl-4-triphenyl-phosphonium)- pyridine-4-yloxy) Zn(II) Pc (3) and 2,9,16,23-tetrakis-(N-(N-butyl-4-triphenyl-phosphonium)-morpholino) Zn(II) Pc (4) upon exposure to light, ultrasound and the combination of light and ultrasound. Two types of ROS were detected: the singlet oxygen (O) and hydroxyl radicals. For light irradiations, only the O was detected.
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