Oxidative cyclization of carbonyl derivatives. 5-Imino-Δ1-1,2,4-triazolines from alkylideneimino guanidines
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چکیده
منابع مشابه
Oxidative Radical Cyclization–Cyclization Reaction Leading to 1H-Benzo[f]isoindole Derivatives
The synthesis of 1H-benzo[f ]isoindole derivatives was achieved by the cascade radical cyclization–cyclization reaction of the active methine substrate having an allyl group and phenyl group as different two radical acceptors. This oxidative transformation proceeded by using iron(III) chloride FeCl3 as a mild oxidant via the intramolecular radical addition to the allyl group followed by the sec...
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The application of the ‘direct amide cyclization’ conditions to the linear delta-hydroxy diamide 11 is described (Scheme 3). Instead of the cyclization to the expected nine-membered cyclodepsipeptide, only the chloro acid 12 was obtained. Its formation could be explained by consecutive formation of the 1,3-oxazol-5(4H)-one 16 and the six-membered imino lactone 17 as intermediates (Scheme 4). Th...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1978
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v78-359