메뉴 건너뛰기




Volumn , Issue 5, 2007, Pages 704-708

Regioselective microwave-assisted synthesis of substituted pyrazoles from ethynyl ketones

Author keywords

Concurrent heating and cooling; Ethynyl ketones; Heterocycles; Microwave synthesis; Pyrazoles

Indexed keywords

1,3 DIPHENYLPYRAZOLE; 1,5 DIPHENYLPYRAZOLE; BENZENE DERIVATIVE; ETHYNYL KETONE DERIVATIVE; HYDRAZINE DERIVATIVE; KETONE DERIVATIVE; PHENYLHYDRAZINE; PHENYLPROPYNONE; PYRAZOLE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 33947729953     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-970783     Document Type: Article
Times cited : (61)

References (43)
  • 39
    • 33947728988 scopus 로고    scopus 로고
    • 13C NMR, IR, MS and HRMS.
    • 13C NMR, IR, MS and HRMS.
  • 40
    • 33947715787 scopus 로고    scopus 로고
    • 1H NMR spectrum of both pyrazole regioisomers. The 5-ethyl-trisubstituted pyrazole (entry 4) showed NOESY effects between the aryl ortho-methine resonances and the methylene protons.
    • 1H NMR spectrum of both pyrazole regioisomers. The 5-ethyl-trisubstituted pyrazole (entry 4) showed NOESY effects between the aryl ortho-methine resonances and the methylene protons.
  • 41
    • 33947725019 scopus 로고    scopus 로고
    • 1,3-Diphenylpyrazole (3, mp 81-83°C (lit.35 mp 84-85°C, Rf, 0.61 (CH2Cl2, HRMS: m/z [MH, calcd for C15H13N2: 221.1073; found: 221.1074 [MH, IR(nujol, νmax, 1598, 1526, 1504, 1360, 1264, 1114, 1061, 1046, 954, 755, 686 cm-1. UV (CH2Cl2, λmax (ε, 284 (17959, 224 (6189) nm. 1H NMR (400 MHz, CDCl3, δ, 7.89 (1 H, d, J, 2.5 Hz, 5-H, 7.85 (2 H, m, PhH, 7.71 (2 H, m, PhH, 7.38 (4 H, PhH, 7.24 (2 H, m, PhH, 6.71 (1 H, d, J, 2.5 Hz, 4-H) ppm. 13C NMR (100 MHz, CDCl3, δ, 153.3 (C, 140.6 (C, 133.5 (C, 129.8 (CH, 129.1 (CH, 128.5 (CH, 128.4 (CH, 126.7 (CH, 126.2 (CH, 119.5 (CH, 105.4 (CH) ppm. MS(APCI, m/z, 221 (100, MH, 194(5, 118 10
    • +], 194(5), 118 (10).
  • 42
    • 33947724566 scopus 로고    scopus 로고
    • 1,5-Diphenylpyrazole (4, mp 52-55°C (lit.35 mp 55-56°C, Rf, 0.18 (CH2Cl2, HRMS: m/z [MH, calcd for C15H13N2: 221.1073; found: 221.1072 [MH, IR(nujol, νmax, 1596, 1541, 1502, 1450, 1385, 1224, 1158, 1130, 1068, 960, 761, 695 cm -1. UV (CH2Cl2, λmax (ε, 252 (14493, 1H NMR (400 MHz, CDCl3, δ, 7.66 (1 H, d, J, 1.5 Hz, 3-H, 7.28-7.22 (8 H, PhH, 7.19-7.15 (2 H, m, PhH, 6.45 (1 H, d, J, 1.5 Hz, 4-H) ppm. 13C NMR (100 MHz, CDCl3, δ, 143.0 (C, 140.3 (CH, 140.1 (C, 130.6 (CH, 128.9 (CH, 128.8 (CH, 128.5 (CH, 128.2 (CH, 127.4 (CH, 125.2 (CH, 107.9 (CH) ppm. MS (APCI, m/z, 221 (100, MH, 194 (10, 152 (5, 103 5
    • +], 194 (10), 152 (5), 103 (5).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.