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Polycyclic N-hetero compounds. XLII: Convenient syntheses of 6,7-dihydro-5H-pyrido[3,3-b]pyrimido[4,5-d]azepine as a novel polyheterocyclic ring system and its 4-substituted derivativesNAGAMATSU, T; HANTANI, Y; TAKAISHI, M et al.Synthesis (Stuttgart). 1991, Num 11, pp 942-946, issn 0039-7881Article

Preparation and characterization of 6-substituted 1,8-diazabicyclo[5.4.0]undec-7-eneMATSUMURA, N; NISHIGUCHI, H; OKADA, M et al.Journal of heterocyclic chemistry. 1986, Vol 23, Num 3, pp 885-887, issn 0022-152XArticle

PRESSURE EFFECT ON RATE CONSTANTS OF PROTON-TRANSFER REACTIONS FROM 2,4,6-TRINITROTOLUENE TO N,N,N',N'-TETRAMETHYLGUANIDINE AND 1,8-DIAZABICYCLO (5.4.0) UNDER-7-ENE IN ACETONITRILE AND DICHLOROMETHANESUGIMOTO N; SASAKI M; OSUGI J et al.1981; BULL. CHEM. SOC. JPN.; ISSN 0009-2673; JPN; DA. 1981; VOL. 54; NO 9; PP. 2598-2602; BIBL. 26 REF.Article

THE KINETICS OF PROTON AND DEUTERON TRANSFER FROM 1-(4-NITROPHENYL)-1-NITROETHANE TO 1,8-DIAZABICYCLO (5.4.0) UNDEC-7-ENE IN APROTIC SOLVENTSLEFFEK KT; PRUSZYNSKI P.1982; CAN. J. CHEM.; ISSN 0008-4042; CAN; DA. 1982; VOL. 60; NO 13; PP. 1692-1695; ABS. FRE; BIBL. 11 REF.Article

TETRACYCLIC HETEROCYCLES AS CNS AGENTSMOFFETT RB.1980; J. HETEROCYCL. CHEM.; USA; DA. 1980; VOL. 17; NO 2; PP. 341-350; BIBL. 16 REF.Article

CONVENIENT PREPARATION OF 1,1-DISUBSTITUTED OLEFINS FROM PRIMARY TOSYLATES AND IODIDESWOLFF S; ESPERANZA HUECAS M; AGOSTA WC et al.1982; J. ORG. CHEM.; ISSN 0022-3263; USA; DA. 1982; VOL. 47; NO 22; PP. 4358-4359; BIBL. 9 REF.Article

Heterocyclische β-Enaminoester. XLII: Zur Reaktion heterocyclischer β-Enaminonitrile mit O-Methyllactimethern. Dimroth-Umlagerung zu neuartigen heterokondensierten Pyrimidophanen = β-Enaminoesters hétérocycliques. XLII: Réaction de β-énaminonitriles hétérocyclqiues avec des O-méthyl lactime éthers. Transposition de Dimroth donnant de nouveaux pyrimidinophanes hétérocondensés = Heterocyclic β-enamino esters. XLII: Reaction of heterocyclic β-enamino nitriles with O-methyllactim ethers. Dimroth rearrangement to novel heterocondensed pyrimidophanesWAMHOFF, H; THIEMIG, H.-A.Chemische Berichte. 1986, Vol 119, Num 3, pp 1070-1076, issn 0009-2940Article

A simple and convenient method for the estimation of catalytic activities of thiazolium ions through rapid oxidation of active aldehydes by flavin in ethanolYANO, Y; TSUKAGOSHI, Y.Journal of chemical research. Synopses (Print). 1984, Num 12, pp 406-407, issn 0308-2342Article

Tautomerism of 9-formyltetrahydro-4H-pyrido[1,2-a]pyrimidin-4-ones and their ring homologues: a 1H, 13C, and 15N nuclear magnetic resonance studyTOTH, G; SZOLLOSY, A; HERMECZ, I et al.Perkin transactions. 2. 1985, Num 12, pp 1881-1885, issn 0300-9580Article

Solvent, pressure, and deuterium isotope effects on proton tunneling: the reaction between 2,4,6-trinitrotoluene and 1,8-diazabicyclo[5.4.0]undec-7-ene in aprotic solventsSUGIMOTO, N; SASAKI, M; OSUGI, J et al.Perkin transactions. 2. 1984, Num 4, pp 655-659, issn 0300-9580Article

Thiophene systems. XI, The synthesis of novel thieno[4,3,2-de] tricyclic ring systemsRUSSELL, R. K; RAMPULLA, R. A; VAN NIEVELT, C. E et al.Journal of heterocyclic chemistry. 1990, Vol 27, Num 6, pp 1761-1770, issn 0022-152X, 10 p.Article

Spiro- and bicyclic azalactams by hydrolysis of α-chlorinated bicyclic amidinesLOFAS, S; AHLBERG, P.Journal of heterocyclic chemistry. 1984, Vol 21, Num 2, pp 583-586, issn 0022-152XArticle

1,2-Heteroannulation of lactams : a facile entry to fused pyrimidinesBARLUENGA, J; TOMAS, M; KOUZNETSOV, V et al.Synlett. 1992, Num 7, pp 563-564, issn 0936-5214Article

Chemistry of diazabicycloundecene (DBU) and other pyrimidoazepinesHERMECZ, I.Advances in heterocyclic chemistry. 1987, Vol 42, pp 83-202, issn 0065-2725Article

Structure of a pyrimidoazepine derivativeYAMAGUCHI, K; ITOH, T; NAGATA, K et al.Acta crystallographica. Section C, Crystal structure communications. 1991, Vol 47, pp 1763-1764, issn 0108-2701, INDEXArticle

Heterocyclische β-Enaminoester. XXXVI: Das Cycloadditions-Ringerweiterungsprinzip beim 4,5-Dihydro-pyrrol: 6,7-Dihydro-1H-azepine, Pyrimido[4,5-b]azepine und 1,2,4-Triazolo[5,95,1':2,3]pyrimido[4,5-b]azepin = β-Enaminoesters hétérocycliques. XXXVI: Le principe d'agrandissement de cycle par cycloaddition appliqué aux dihydro-4,5 pyrroles: dihydro-6,7 1H-azépines, pyrimido [4,5-b] azépines et triazolo-1,2,4 [5',1':2,3] pyrimido [4,5-b] azepine = Heterocyclic β-enamino esters. XXXVI: The cycloaddition-ring enlargement principle on 4,5-dihydropyrroles: 6,7-dihydro-1H-azepines, pyrimido [4,5-b] azepines, and 1,2,4-triazolo [5',1':2,3] pyrimido [4,5-b] azépineWAMHOFF, H; HENDRIKX, G.Chemische Berichte. 1985, Vol 118, Num 3, pp 863-872, issn 0009-2940Article

Efficient procedure for C'-3 substitution and C-7 N-acylation of 7-aminocephalosporanic acid (7-ACA): synthesis of cefazolin antibiotic and related compoundsPALOMO-COLL, A; PALOMO COLL, A. L; PALOMO NICOLAU, C et al.Tetrahedron (Oxford. Print). 1985, Vol 41, Num 22, pp 5133-5139, issn 0040-4020Article

Nitrogen bridgehead compounds. XXXXVII: Synthesis and some reactions of 4H, 1OH-pyrimido[1,2-a]azepin-4-onesHERMECZ, I; KOKOSI, J; MESZAROS, Z et al.Heterocycles (Sendai). 1984, Vol 22, Num 10, pp 2285-2292, issn 0385-5414Article

Studies on pyridopyrimidines. I: Synthesis of pyrazolo[3',4':4,5]pyrido[2,3-d]pyrimidine derivativesNOGUCHI, M; NAGATA, S; KAJIGAESHI, S et al.Chemical and pharmaceutical bulletin. 1986, Vol 34, Num 10, pp 3994-4000, issn 0009-2363Article

Saturated heterocycles. LXXXVIII: Synthesis of a new ring system: dipyrido[1,2-a:4,3-d]pyrimidin-11-one derivativesHUBER, I; FULOP, F; DOMBI, G et al.Journal of the Chemical Society. Perkin transactions. I. 1987, Num 4, pp 909-912, issn 0300-922XArticle

Nitrogen bridgehead compounds. XLVI: Synthesis and stereochemistry of 9-formyl-6,7,8,9-tetrahydro-2-oxo-2H- and 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylates and their homologuesHERMECZ, I; HORVATH, A; MESZAROS, Z et al.Perkin transactions. 2. 1985, Num 12, pp 1873-1879, issn 0300-9580Article

Nitrogen bridgehead compounds. XXXIV: New antiallergic 4H-pyrido[1,2-a]pyrimidin-4-ones. IVHERMECZ, I; HORVATH, A; MESZAROS, Z et al.Journal of medicinal chemistry (Print). 1984, Vol 27, Num 10, pp 1253-1259, issn 0022-2623Article

ACTIVATED LACTAMS: A ONE STEP SYNTHESIS OF AZACYCLOALKA (2,3-D) PYRIMIDINE DERIVATIVES USING KETENE-S,N-ACETALSTAKAHATA H; TOMIGUCHI A; NAKANO M et al.1982; SYNTHESIS (STUTTG.); ISSN 0039-7881; DEU; DA. 1982; NO 2; PP. 156-157; BIBL. 2 REF.Article

KINETICS AND TUNNELING IN THE PROTON - AND DEUTRON - TRANSFER REACTION BETWEEN 2,4,6-TRINITROTOLUENE AND 1,8-DIAZABICYCLO (5.4.0) UNDEC-1-ENE IN SOME APROTIC SOLVENTSSUGIMOTO N; SASAKI M; OSUGI J et al.1982; J. PHYS. CHEM.; ISSN 0022-3654; USA; DA. 1982; VOL. 86; NO 17; PP. 3418-3423; BIBL. 37 REF.Article

2-AZABICYCLO (3.2.0) HEPTANE-3,4-DIONES. I: A NOVEL EPIMERIZATION REACTION OF C7-SUBSTITUANTSSANO T; HORIGUCHI Y; TSUDA Y et al.1981; HETEROCYCLES; ISSN 0385-5414; JPN; DA. 1981; VOL. 16; NO 3; PP. 355-358; BIBL. 10 REF.Article

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