1H-isochromene-1-ones and isoquinoline-1(2H)-ones with carbonyl group in position 3: Features of synthetic approaches and transformation
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چکیده
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3-tert-Butyl-1H-isochromene-1-thione
The title compound, C(13)H(14)OS, crystallizes with two independent mol-ecules in the asymmetric unit. The unit cell contains three voids of 197 Å(3), but the residual electron density (highest peak = 0.24 e Å(-3) and deepest hole = -0.18 e Å(-3)) in the difference Fourier map suggests no solvent mol-ecule occupies this void. The crystal structure is stabilized by π-π inter-actions between the ...
متن کامل3-(4-Fluorobenzyl)-1H-isochromene-1-thione
In the mol-ecule of the title compound, C(16)H(11)FOS, the benzene ring is oriented at a dihedral angle of 89.68 (3)° with respect to the planar [maximum deviation 0.009 (2) Å] isocoumarin ring system. An intra-molecular C-H⋯S inter-action results in the formation of a planar five-membered ring. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains paral...
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The KO(t)Bu-mediated annulation of acetonitrile with aldehyde was observed, in which the cleavage of four C(sp(3))-H bonds occurred and a total of eight new bonds were formed during the synthesis of substituted dihydropyridinones in the presence of peroxide. Furthermore, dihydropyridinones have been transformed into pyridinones using KO(t)Bu in DMSO.
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چکیده ندارد.
preparation of 3, 4-dihydropyrimidin-2(1H)-ones using quaternary ammonium- treated clay in water
In this study, a variety of 3, 4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium- treated clay -catalyzed process proved to be simple, efficient, and environmentally friendly.
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2022
ISSN: ['1551-7012', '1551-7004']
DOI: https://doi.org/10.24820/ark.5550190.p011.861