Synthesis and spectral data for quinoxaline derivatives

Abstract

cal properties of the synthesized 2-aminothiazoles are summarized in Table II. Some derivatives of 2-aminothiazoles were prepared by the method of Shriner et al. ( 12) and are listed in Table II.

The Chemistry of α-Haloketones and Their Utility in Heterocyclic Synthesis

“…Several pyrazines [ 373 , 374 , 375 , 376 , 377 , 378 , 379 , 380 , 381 ], oxazines [ 382 , 383 , 384 , 385 ], and thiazines [ 386 , 387 , 388 , 389 , 390 , 391 , 392 , 393 ] were obtained when 177 were treated with α-haloketones ( Scheme 51 ).…”

The Chemistry of α‐Haloketones and Their Utility in Heterocyclic Synthesis

“…A general synthetic route for 4-aryl-1,2,3,4-tetrahydroisoquinolines 166 was reported from the reaction of aromatic aldehydes 163, methyl amine and α-haloacetophenones in the presence of sodium borohydride followed by cyclization with sulfuric acid and zinc in methanol (Scheme 47) [362][363][364][365]. Several pyrazines [373][374][375][376][377][378][379][380][381], oxazines [382][383][384][385], and thiazines [386][387][388][389][390][391][392][393] were obtained when 177 were treated with α-haloketones (Scheme 51).…”