Synthesis of Some New Thiazole, Thiophene, and 2,3-Dihydro-1,3,4-thiadiazole and Pyrimidino[1,2-b]indazole Derivatives
摘要:
Hydrazonoyl halides 4a-g reacted with methyl carbodithioate 3 thioanilide 10 to give 1,3,4-thiadiazoles 5a-g and 13a-g, respectively. Thioanilide 10 reacted with omega-bromoacetophenones 14a-e to give the acyclic product 15a-e, which was converted to the thiophenes 16a-e and to the thiazoles 17a-e, respectively. Structures of the newly synthesized compounds were elucidated on the basis of elemental analysis, spectral data, and alternative synthesis route whenever possible.
one-pot, regioselective and versatile procedure was developed for the synthesis of a series of highlyfunctionalized pyrazole derivatives. The compounds were tested for antiproliferative activity on a panel of tumour and normal cells. 5-anilino-4-nitrile-3-phenyl pyrazoles emerged as the most promising derivatives, and compound 23 selectively inhibited the growth of estrogen-dependent SKMEL-28 and HeLa
A Simple and Efficient Diversity-Oriented Synthesis of New Substituted 3-(Arylamino)-6,7-dihydro-1H-indazol-4(5H)-ones by a KOH-Assisted One-Pot Reaction
A novel, simple, and straightforward combinatorial method for the synthesis of new substituted 3-(arylamino)-6,7-dihydro-1H-indazol-4(5H)-one derivatives has been developed. The synthesis was achieved via a one-pot three-component reaction of aromatic isothiocyanates, substituted 1,3-cyclohexanediones, and hydrazine hydrate in dimethyl sulfoxide as a polar aprotic solvent. This methodology has the
Spectroscopic, X-ray and DFT studies of prototropic tautomerism and photophysical properties of regioselectively designed new 3-, 2,3-substituted tetrahydro[4H]indazol-4-ones
作者:Jasneet Rana、R.P. Chaudhary
DOI:10.1016/j.molstruc.2021.130762
日期:2021.11
prototropic tautomerism studies of 3-substituted-2H-indazol-4-ones have been described on the basis of spectral, LC-MS and DFT studies. The structural ambiguity was resolved by X-ray diffraction studies of compound 5 and validated by theoretical studies on the structure 5a and its regioisomer 6a. Photophysical studies (UV and fluorescence) of compounds 3 and 5 in different solvents are also reported
SUESSE M.; JOHNE S., J. PRAKT. CHEM., 328,(1986) N 4, 635-639
作者:SUESSE M.、 JOHNE S.
DOI:——
日期:——
Synthesis of Some New Thiazole, Thiophene, and 2,3-Dihydro-1,3,4-thiadiazole and Pyrimidino[1,2-b]indazole Derivatives
作者:Nora M. Rateb
DOI:10.1080/104265090921083
日期:2005.10
Hydrazonoyl halides 4a-g reacted with methyl carbodithioate 3 thioanilide 10 to give 1,3,4-thiadiazoles 5a-g and 13a-g, respectively. Thioanilide 10 reacted with omega-bromoacetophenones 14a-e to give the acyclic product 15a-e, which was converted to the thiophenes 16a-e and to the thiazoles 17a-e, respectively. Structures of the newly synthesized compounds were elucidated on the basis of elemental analysis, spectral data, and alternative synthesis route whenever possible.