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Volumn , Issue 17, 2007, Pages 2703-2706

A novel, one-pot, three-component synthesis of 5H-[1,3]thiazolo[3,2-a] pyrimidine derivatives

Author keywords

5H 1,3 thiazolo 3,2 a pyrimidines; Cyclizations; Heterocycles; Isocyanides; Three component reaction

Indexed keywords

ACETIC ACID DERIVATIVE; CARBOXYLIC ACID DERIVATIVE; CYANIDE; DI TERT BUTYL 7 [CYCLO HEXYL(2 ETHOXY 2 OXO ACETYL)AMINO] 3 METHYL 5H [1,3]THIAZOLO[3,2 A]PYRIMIDINE 5,6 DICARBOXYLATE; DIETHYL 7 [TERT BUTYL(2 ETHOXY 2 ACETYL)AMINO] 3 METHYL 5H [1,3]THIAZOLO[3,2 A]PYRIMIDINE 5,6 DICARBOXYLATE; DIMETHYL 7 [CYCLOHEXYL(2 ETHOXY 2 OXOACETYL)AMINO] 5H [1,3}THIAZOLO[3,2 A]PYRIMIDINE 5,6 DICARBOXYLATE; DIMETHYL 7 [TERT BUTYL(2 ETHOXY 2 OXOACETHYL)AMINO] 5H [1,3]THIAZOLO[3,2 A]PYRIMIDINE 5,6 DICARBOXYLATE; PYRIMIDINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 35748975966     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-991048     Document Type: Article
Times cited : (14)

References (31)
  • 25
    • 35748931922 scopus 로고    scopus 로고
    • Procedure for the Preparation of Dimethyl 7-[Cyclohexyl(2-ethoxy-2- oxoacetyl)amino]-5H-[1,3]thiazolo[3,2-a] pyrimidine-5,6-dicarboxylate (4a, To a magnetically stirred solution of ethyl 2-oxo-2-(1,3-thiazol-2-yl-amino)acetate (0.200 g, 1 mmol) and dimethyl acetylene-dicarboxylate (0.142 g, 1 mmol) in anhyd CH2Cl2 (6 mL) was added dropwise a solution of cyclohexyl isocyanide (0.109 g, 1 mmol) in anhyd CH2Cl2 (2 mL) at 25°C over 10 min. The reaction mixture was then stirred for 24 h. The solvent was removed and the residue was purified by column chromatography using n-hexane-EtOAc (1:2) as eluent. The solvent was removed and the product was obtained. Yield: 0.41 g (90, yellow crystals. IR (KBr, 1744, 1725, 1680, 1657 (C=O, 1535, 1483, 1414, 1340, 1223, 1193, 1121 cm-1. 1H NMR500.1 MHz, CDCl3, δ, 1.06-2.02 [t, J, 7.0 Hz, 3 H, OCH 2
    • 2 (2 mL) at 25°C over 10 min. The reaction mixture was then stirred for 24 h. The solvent was removed and the residue was purified by column chromatography using n-hexane-EtOAc (1:2) as eluent. The solvent was removed and the product was obtained. Yield: 0.41 g (90%); yellow crystals. IR (KBr):(...)
  • 26
    • 35748937516 scopus 로고    scopus 로고
    • Selected X-ray Crystallographic Data for Compound 4a: C20H25N3O7S, monoclinic, space group, P21/n, a, 8.7880(9) Å b, 20.488(2) Å, c, 12.2861(12) Å, β, 99.901 (1)°, V, 2179.1 (4) Å3, T, 295(2) K, Z, 4, Dcalcd, 1.376 g cm-3, μ(Mo-Kα, 0.195 mm -1, 16164 reflections measured, 4061 unique reflections Rint, 0.032, 3284 observed reflections, final R 1, 0.050, ωR2, 0.128 and for all data R1, 0.062. CCDC 640870 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via
    • 1 = 0.062. CCDC 640870 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/ data_request/cif.
  • 29
    • 0003829757 scopus 로고
    • In The Chemistry of Functional Groups, Supplement C
    • Rappoport, Z, Eds, Wiley: New York, Chap. 20
    • Walborsky, H. M.; Periasamy, M. P. In The Chemistry of Functional Groups, Supplement C; Patai, S.; Rappoport, Z., Eds.; Wiley: New York, 1983, Chap. 20, 835-837.
    • (1983) Patai, S , pp. 835-837
    • Walborsky, H.M.1    Periasamy, M.P.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.