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      PPh3-catalyzed [2 + 2 + 2] and [4 + 2] annulations: synthesis of highly substituted 1,2-dihydropyridines (DHPs)

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          Most cited references 36

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          Reactions of electron-deficient alkynes and allenes under phosphine catalysis.

           Xin Lu,  Z Xu,  X.-C. Zhang (2001)
          The development of some new synthetic reactions derived from nucleophilic addition of phosphines to electron-deficient carbon-carbon triple bonds is described. These reactions show that the phosphine plays the role of a nucleophile as well as an excellent leaving group. The central problem is to generate a 1,3-dipole from alkynoates or allenoates (2,3-butadienoates) by interaction with various phosphines. This study illuminates the unusual phenomena and shows how this understanding allows control of the reaction.
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            Nucleophilic Phosphine Organocatalysis

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              Phosphine-triggered synthesis of functionalized cyclic compounds.

              Nucleophilic phosphine catalysis has proven to be a powerful tool in organic synthesis, which can provide easy access to cyclic, bicyclic or polycyclic carbocycles and heterocycles. Owing to their comparatively strong and readily tunable nucleophilicity, phosphines can be easily tailored to efficient annulation reactions with good control over reaction selectivity. This has resulted in a tremendous increase in their scope and in a concomitant number of reports where phosphine-triggered annulation reactions occur. This tutorial review summarizes the recent achievements in this area.
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                Author and article information

                Journal
                CHCOFS
                Chem. Commun.
                Chem. Commun.
                Royal Society of Chemistry (RSC)
                1359-7345
                1364-548X
                2010
                2010
                : 46
                : 2
                : 312-314
                Article
                10.1039/B915825A
                © 2010
                Product
                Self URI (article page): http://xlink.rsc.org/?DOI=B915825A

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