Michael Addition of Soft Carbon Nucleophiles to Alkylidene Isoxazol-5-ones: A Divergent Entry to β-Branched Carbonyl Compounds
作者:Naylil M. R. Capreti、Igor D. Jurberg
DOI:10.1021/acs.orglett.5b01004
日期:2015.5.15
A novel, divergent strategy toward the synthesis of β-branched (and linear) carbonylcompounds is developed by taking advantage of alkylidene isoxazol-5-ones as key building blocks. The yields obtained range from good to excellent, therefore making the described methods attractive options for building such molecules.
Difunctionalization of the Isocyano Group: Atom-Economic Synthesis of Pyrimidinediones
作者:Jian Lang、Ye Wei
DOI:10.1055/s-0037-1610348
日期:2019.2
the nitrogen and carbons atoms of the isocyanogroup would largely enrich the structural diversity of compounds. Herein, we disclosed a silver-catalyzeddifunctionalization of the isocyanogroup with cyclicoximes. This method can generate a great array of structurally novel and interesting pyrimidinediones and features excellent atom economy, good functional group compatibility, and amenability to late-stage
Unusual Approach to Branched 3-Alkynylamides and to 1,5-Dihydropyrrol-2-ones
作者:Igor Dias-Jurberg、Fabien Gagosz、Samir Z. Zard
DOI:10.1021/ol902472r
日期:2010.2.5
Rare carboxamide branched alkynes such as 11a can be readily obtained by reaction of the electrophilic 4-alkylidene isoxazolinones with isocycanides followed by nitrosative cleavage of the heterocyclic ring. N-lodosuccinimide induced ring closure in the presence of a nucleophile results in the formation of new iodopyrrolinones such as 16c.
SHIBUYA MASAYUKI; KUBOTA SEIJU, HETEROCYCLES, 1980, 14, NO 5, 601-609