N-[bis(methylthio)methylene]amino Ester (BMMA): Novel Reagents for Annelation of Pyrimidine Moieties
摘要:
New reagents for heterocyclic annelations containing a N-[bis(methylthio)methylene]amino moiety (=BMMA) were developed and studied regarding their scope and limitations: one-pot reaction with (hetero)aromatic ortho-aminocarbonyl-type model compounds (''carbonyl'' = COOEt, COMe and CN) to a series of new benzo- or thieno-condensed pyrimidines, pyrrolo[1,2-c]pyrimidines, imidazo[1,2-c]pyrimidines and 1,2,4-triazolo[1,5-c]pyrimidines, depending on the reagent used [(MeS)(2)C=N-R with R = CH2-COOEt, CH(2)CH(2)COOEt, NH-COOEt].
SYNTHESIS OF CONDENSED PYRIMIDINES IN ONE-POT REACTION FROM PYRANOQUINOLINES AND BMMAs
作者:Nariman M. Nahas
DOI:10.1515/hc.2008.14.1-2.51
日期:2008.1
New pentacyclic heterocycles of the type 3a-e -5a-e were synthesized by one pot reaction of the amino-cyano pyrano[3,2-h]quinolines la-e with BMMAs (e.g. Ethyl N-[bis ( methylsulfanyl) methylene] glycinate, ethyl 2[bis (methylsulfanyl) methylene]-1-methylhydrazine carboxylate and / or ethyl N[ bis( methylsulfanyl) methylene]ß-alaninate). All the synthesized derivatives were identified by conventional