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Stereoselective Photoredox Catalyzed (3+3) Dipolar Cycloaddition of Nitrone with Aryl Cyclopropane
Angewandte Chemie, 2023AbstractBy resorting to the principle of remote activation, we herein demonstrate the first photoredox catalyzed (3+3) dipolar cycloaddition of nitrones with aryl cyclopropanes. Key to the fidelity of the reaction resides in a facile manner of substrate activation by single‐electron transfer (SET) oxidation with photoredox catalysis, and the reaction ...
Yao Xu +6 more
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New Parabanate Products by 1, 3-Dipolar Cycloaddition Reaction (‘Criss-Cross’ Cycloaddition)
High Performance Polymers, 1999New parabanate products containing 1, 3, 5, 7-tetraazabicyclo[3, 3, 0]octane-2, 6-dione are described. The synthesis of αω-diisocyanato-telechelics starting from two diisocyanates having a preformed parabanic unit using a [3+2] dipolar cycloaddition reaction was studied.
Adrian A Caraculacu +2 more
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ChemInform Abstract: [2 + 3]Dipolar Cycloadditions of a Monomeric Thioaldehyde.
Chemischer Informationsdienst, 1986AbstractThiopivalaldehyd (I) liefert mit den Nitronen (II) und (IV), dem Nitriloxid (VI), der Diazoverbindung (VIII) sowie dem Azomethinimin (X) die stabilen [2 + 3]‐Cycloaddukte (III), (V), (VII), (IX) und (XI).
E. VEDEJS, R. G. WILDE
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Trimethylsilyl Triflate-promoted [2+3] Dipolar Cycloaddition of Nitrones with Allyltrimethylsilane
HETEROCYCLES, 19923-Alkyl-5-trimethylsilylmethylisoxazolidines are accessible in good yields and at temperatures ≤ 20°C, by the trimethylsilyl triflate-promoted reaction of allyltrimethylsilane with aliphatic nitrones.
Claudio Trombini, Dilip D. Dhavale
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Captodative Alkenes in Concerted 1, 3-Dipolar Cycloadditions
1986The 1, 3-dipolar cycloaddition of an E-/Z-pair of captodative alkenes to a cyclic aldonitrone is demonstrated to occur stereospecifically. Additions of α-(tert-butylthio)acrylonitri le to a series of C, N-diphenylnitrones show a change in regioselectivity upon donor substitution in the C-phenyl-ring.
Dietrich Döpp +2 more
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Ti(IV) promoted 1, 3-dipolar cycloaddition of nitrones to vinyl ethers
Tetrahedron, 1998Abstract The 1, 3-dipolar cycloaddition of nitrones to vinyl ethers is accelerated by Ti(IV) species. The efficiency of the catalyst parallels its complexation capacity. The use of Ti(iPrO)2Cl2 favours the formation of trans cycloadducts, presumably through an endo bidentate complex, in which the metal atom is simultaneously coordinated to the vinyl ...
Pau Bayo´n +3 more
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l,3-Dipolar cycloaddition of unsatu rated ferrocene derivatives with carbonitrileN-oxides
Russian Chemical Bulletin, 19943,5-Disubstituted isoxazolines and isoxazoles have been synthesized using 1,3-dipolar cycloaddition of ferrocene derivatives FcCH=CH2, FcCOCH=CH2 and FcC≡CH with aliphatic and aromatic carbonitrileTV-oxides.
G. A. Shvekhgeimer, M Litim
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Construction of nine-membered N,N,O-heterocycles via Pd-catalyzed [6+3] dipolar cycloaddition
Chemical Communications, 2022A new approach for the synthesis of 9-membered N,N,O-heterocycles by Pd-catalyzed [6+3] dipolar cycloaddition of N-iminoisoquinolinium ylides and 2-vinyl oxetanes has been developed.
Hongling Xie +5 more
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