caa a22 4500 445877235 CHVBK 20180317145531.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10593-011-0744-x doi (NATIONALLICENCE)springer-10.1007/s10593-011-0744-x 2-Alkyl-4-oxohexahydropyrimido[4,5- d ]- and -[5,4- d ]azocines [Elektronische Daten] [L. Voskressensky, M. Ovcharov, T. Borisova, L. Kulikova, A. Listratova, R. Borisov, A. Varlamov] It has been established that 2-R-4-oxotetrahydropyrido[4,3-d]pyrimidines, under the action of activated alkynes in methanol, form a mixture of 2-R-4-oxohexahydropyrimido[4,5-d]azocines and products of decomposition of the tetrahydropyridine ring, the 2-R-5-methoxymethyl-4-oxo-6-vinylaminoethyl-pyrimidines. Tetrahydropyrido[3,4-d]pyrimidine, isomeric at the junction of the pyrimidine and tetrahydropyridine rings, forms only the corresponding pyrimido[5,4-d]azocine, the product of expansion, under the action of methyl propiolate. Springer Science+Business Media, Inc., 2011 activated alkyne nationallicence pyrimidoazocine nationallicence tandem expansion nationallicence tandem decomposition nationallicence Voskressensky L. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Ovcharov M. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Borisova T. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Kulikova L. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Listratova A. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Borisov R. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Varlamov A. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/2(2011-05-01), 222-228 0009-3122 47:2<222 2011 47 10593 https://doi.org/10.1007/s10593-011-0744-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-011-0744-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Voskressensky L. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Ovcharov M. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Borisova T. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Kulikova L. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Listratova A. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Borisov R. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 700 1- Varlamov A. Peoples' Friendship University of Russia, 6 Miklukho-Maklaya St., 117198, Moscow, Russia aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/2(2011-05-01), 222-228 0009-3122 47:2<222 2011 47 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer