caa a22 4500 467949174 CHVBK 20180405193740.0 cr unu---uuuuu 170328e20041001xx s 000 0 eng 10.1007/s10593-005-0005-y doi (NATIONALLICENCE)springer-10.1007/s10593-005-0005-y (NATIONALLICENCE)springer-10.1007/s10593-005-0056-0 A novel spiroheterocyclization: synthesis of 1 ethoxycarbonylmethylidene- 8-(2' ethoxycarbonylmethylidene- 5',5'-dimethyl-3'-pyrrolidinylidene)- 3,3,6-trimethyl-2-azaspiro[4,5]deca-6,9-diene [Elektronische Daten] [Yu. Shklyaev, Yu. Nifontov, M. Kodess, M. Ezhikova] It was shown that isobutyraldehyde and cyanoacetic ester enter into reaction with meta-xylene initially at the fourth carbon atom with the formation of a spiropyrroline ring and then at the newly formed exomethylene bond with closure of the 1-ethoxycarbonylmethylidene-8-(2'-ethoxycarbonylmethylidene-5',5'-dimethyl-3'-pyrrolidinylidene)-3,3,6-trimethyl-2-azaspiro[4,5]deca-6,9-diene system. Springer Science+Business Media, Inc., 2004 isobutyraldehyde nationallicence meta -xylene nationallicence cyanoacetic ester nationallicence Ritter reaction nationallicence spiroheterocyclization nationallicence Shklyaev Yu Institute of Technical Chemistry, Urals Branch of the Russian Academy of Sciences, Perm aut Nifontov Yu Institute of Technical Chemistry, Urals Branch of the Russian Academy of Sciences, Perm aut Kodess M. Institute of Organic Synthesis, Urals Branch, Russian Academy of Sciences, Ekaterinburg aut Ezhikova M. Institute of Organic Synthesis, Urals Branch, Russian Academy of Sciences, Ekaterinburg aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/10(2004-10-01), 1283-1287 0009-3122 40:10<1283 2004 40 10593 https://doi.org/10.1007/s10593-005-0005-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-005-0005-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shklyaev Yu Institute of Technical Chemistry, Urals Branch of the Russian Academy of Sciences, Perm aut NATIONALLICENCE 700 1- Nifontov Yu Institute of Technical Chemistry, Urals Branch of the Russian Academy of Sciences, Perm aut NATIONALLICENCE 700 1- Kodess M. Institute of Organic Synthesis, Urals Branch, Russian Academy of Sciences, Ekaterinburg aut NATIONALLICENCE 700 1- Ezhikova M. Institute of Organic Synthesis, Urals Branch, Russian Academy of Sciences, Ekaterinburg aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/10(2004-10-01), 1283-1287 0009-3122 40:10<1283 2004 40 10593 NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-005-0056-0 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer