Synthesis, structure elucidation and antibacterial activity of 6-ethyl-6,9-dihydro-9-oxopyrazolo[3,4-<i>f</i>]quinoline-8-carboxylic acid
作者:Thomas J. Schwan、Raymond Freedman、Jay R. Pollack
DOI:10.1002/jhet.5570200538
日期:1983.9
The preparation, structureelucidation and antibacterial activity of 6-ethyl-6,9-dihydro-9-oxopyrazolo-[3,4-f]quinoline-8-carboxylic acid are reported.
报道了6-乙基-6,9-二氢-9-氧杂唑并-[3,4- f ]喹啉-8-羧酸的制备,结构鉴定和抗菌活性。
Selective Synthesis of 1-Functionalized-alkyl-1<i>H</i>-indazoles
作者:Kevin W. Hunt、David A. Moreno、Nicole Suiter、Christopher T. Clark、Ganghyeok Kim
DOI:10.1021/ol902050m
日期:2009.11.5
An efficient method for the selective "N1" alkylation of indazoles is described. Use of alpha-halo esters, lactones, ketones, amides, and bromoacetonitrile provides good to excellent yield of the desired N1 products.
Direct C3-Arylation of 2 <i>H</i>
-Indazole Derivatives with Aryl Bromides by using Low Loading of a Phosphine-free Palladium Catalyst
The palladium-catalyzed direct arylation of 2 H-indazoles with arylbromides for the preparation of 3-aryl-2 H-indazoles was found to proceed in high yields when using only 0.5–0.1 mol % Pd(OAc)2 catalyst and KOAc as inexpensive base. A wide variety of electron-deficient and electron-rich arylbromides and also heteroaryl bromides has been successfully employed. Both electron-withdrawing and electron-donating