One-carbon compounds as synthetic intermediates. The synthesis of hydropyrimidines and hydroquinazolines by sequential nucleophilic addition to diphenyl cyanocarbonimidate with concomitant cyclization
An efficient one pot synthesis of 2-amino quinazolin-4(3 H )-one derivative via MCR strategy
作者:V. Narayana Murthy、Satish P. Nikumbh、S. Praveen Kumar、L. Vaikunta Rao、Akula Raghunadh
DOI:10.1016/j.tetlet.2015.08.040
日期:2015.10
multi-component reaction strategy was developed for the construction of important building blocks, 2-amino 3-substituted quinazolinone derivatives from isatoic anhydride and amine with electrophilic cyanating compound, N-cyano-4-methyl-N-phenylbenzenesulfonamide (NCTS). The quinazolinone synthesis proceeds via a sequential series of reactions such as nucleophilic attack of the amine group on the carbonyl group
Pyridyl Glycosyl Triazole/CuI-Mediated Domino/Tandem Synthesis of Quinazolinones
作者:Sumit K. Singh、Sunil Kumar、Mangal S. Yadav、Vinod K. Tiwari
DOI:10.1021/acs.joc.2c01951
日期:2022.11.18
The glycosyl 1,2,3-triazoles are expediently accessible from readily available sugar-derived glycosyl azide by utilizing modular CuAAC “ClickChemistry”, and the resulting glycohybrid skeleton possesses efficient metal-coordinating centers that support a wide range of metal-mediated efficient catalysis in various imperative organic transformations. Here, we designed and developed pyridyl glycosyl triazoles
Synthesis of 2-Amino 3-Substituted Quinazolin-4(3H)-one Derivatives<i>via</i>Iodine-Mediated Guanidinylation of Pbf-Activated Thiourea
作者:Jizhen Li、Yuhua Mi、Jianghua He、Xuyang Luo、Erkang Fan
DOI:10.1002/jhet.1067
日期:2013.3
2‐Amino 3‐substituted‐quinazolin‐4(3H)‐one derivatives were synthesized from Pbf‐isothiocyanate and methyl anthranilate. The construction of the guanidine‐containing quinazolinone heterocyclic skeleton was achieved using Pbf‐activated thiourea treated with primary amines via iodine‐mediated guanidinylation. The desired compounds were obtained after Pbf cleavage by trifluoroacetic acid.
GARRATT, PETER J.;HOBBS, CHRISTOPHER J.;WRIGGLESWORTH, ROGER, J. ORG. CHEM., 54,(1989) N, C. 1062-1069
作者:GARRATT, PETER J.、HOBBS, CHRISTOPHER J.、WRIGGLESWORTH, ROGER
DOI:——
日期:——
One-carbon compounds as synthetic intermediates. The synthesis of hydropyrimidines and hydroquinazolines by sequential nucleophilic addition to diphenyl cyanocarbonimidate with concomitant cyclization
作者:Peter J. Garratt、Christopher J. Hobbs、Roger Wrigglesworth