Chemistry of Diazocarbonyl Compounds: XX. Chemoselective O-Alkylation of 3(2H)-Oxoisothiazole-1,1-dioxides View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2004-05

AUTHORS

B. Schulze, Vs. V. Nikolaev, L. Hennig, L. L. Rodina, J. Sieler, V. A. Nikolaev

ABSTRACT

Catalytic decomposition of diazoacetylacetone, ethyl diazoacetate, and diethyl diazomalonate effected by dirhodium tetraacetate in the presence of 3(2H)-oxoisothiazole-1,1-dioxides resulted in O-alkylation of amide carbonyl of the heterocycle affording the corresponding enol ethers in preparative yield. The reaction occurred chemoselectively. The 1,3-dicarbonyl derivatives of 3-hydroxyisothiazole-1,1-dioxides obtained in contrast to analogous N-alkylated products are not enolized in solutions and in crystals. More... »

PAGES

740-746

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/b:rujo.0000043724.25474.51

DOI

http://dx.doi.org/10.1023/b:rujo.0000043724.25474.51

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020348829


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