Reaction with Hydrazonoyl Halides 64: Synthesis of Some New Triazolino[4,3-<i>a</i>]pyrimidines, 1,3,4-Thiadiazoles, and 5-Arylazothiazoles
作者:Abdou O. Abdelhamid、Abdelgawad A. Fahmi、Basma S. Baaui
DOI:10.1002/jhet.945
日期:2012.9
benzofuran moiety were prepared from the reaction of 2‐(2‐phenylhydrazono)‐1‐(5‐bromobenzofuran‐2‐yl)‐2‐chloroethanone with each of potassium thiocyanate, potassium selenocyanate, alkyl carbodithioate, and pyrmidine‐2‐thione derivatives. All the newly synthesized compounds were confirmed by elemental analysis, spectral data, and alternative route synthesis whenever possible.
由2-(-)的反应制得2,3-二氢-1,3,4-噻二唑,2,3-二氢-1,3,4-硒代二唑和含苯并呋喃部分的三唑啉并[4,3- a ]嘧啶。 2-苯基肼基)-1-(5-溴苯并呋喃-2-基)-2-氯乙酮与硫氰酸钾,硒氰酸钾,碳二硫代烷基酯和嘧啶-2-硫酮衍生物中的每一种。所有新合成的化合物均通过元素分析,光谱数据和可能的替代路线合成得到确认。
Radical Arylation of Phenols, Phenyl Ethers, and Furans
作者:Alexander Wetzel、Gerald Pratsch、Roman Kolb、Markus R. Heinrich
DOI:10.1002/chem.200902927
日期:2010.2.22
efficient, and cost‐effective new access to diversely functionalized biphenyl alcohols and ethers. Free phenolic hydroxy groups, aromatic and aliphatic amines, as well as amino acid substructures, are well tolerated. Two examples for the applicability of the methodology are the partialsynthesis of a β‐secretase inhibitor and the synthesis of a calcium‐channel modulator.
Substituted Carbazoles – A New Class of Anthelmintic Agent
作者:David Rennison、Stephanie M. Gueret、Olivia Laita、Ross J. Bland、Ian A. Sutherland、Ian K. Boddy、Margaret A. Brimble
DOI:10.1071/ch16169
日期:——
modifications to lead carbazole 1 (EC100 = 2.5 μM against Haemonchus contortus in vitro), which was revealed in a small molecule screening program as a potentially promising platform for the development of new anthelmintic drugs. Subsequently, analogues 19, 21, 41, 42 (EC100 = 1.25 μM, all), and 39 (EC100 = 0.625 μM) were demonstrated to exhibit enhanced in vitro anthelmintic activity over the lead structure
Synthesis with Nitriles: Synthesis of Some New Mercaptopyridazine, Mercaptopyridazino[1,6-a]quinazoline and Thiophene Derivatives
作者:Mariam Al-Sheikh
DOI:10.3390/molecules13112750
日期:——
hylidene)malononitrile (3) undergoes azo coupling with diazotized aromatic amines to afford arylhydrazone derivatives, which are readily cyclized to afford the corresponding 3(2H)-pyridazinimine derivatives upon reflux in aqueous NaOH. Under similar condition an o-cyanoarylhydrazone derivative was cyclized into 6H-pyridazino[1,6-a]quinazolin-6-imine, which in turn was easily transformed into 6H-pyridazino[1
Facile synthetic route to benzo[<i>c</i>]chromenones and thieno[2,3-<i>c</i>]chromenones
作者:Olga Ya. Shyyka、Roman L. Martyak、Mykola A. Tupychak、Nazariy T. Pokhodylo、Mykola D. Obushak
DOI:10.1080/00397911.2017.1380833
日期:2017.12.17
two-step procedure for the synthesis of fused chromenone derivatives was developed. Reduction of the obtained in the Meerwein arylation reaction aryl- and thienylquinones allowed to construct 6H-benzo[c]chromene-6-ones and 4H-thieno[2,3-c]chromen-4-one in a more cost- and time-effective manner in comparison with already known methods. The obtained products have provided a new entry to chromenone derivatives