A one-pot I2-mediated annulation reaction of substrates containing diamino groups and aldehydes has been developed viaoxidativeC–Nbondformation. This general and environmentally benign synthetic approach provides facile access to a variety of 1,3-diazaheterocyclic compounds, including quinazolinones, benzimidazoles, and cyclic amidines.
Synthesis of Cu-catalysed quinazolinones using a C<sub>sp3</sub>–H functionalisation/cyclisation strategy
作者:Aniket V. A. Gholap、Soham Maity、Carola Schulzke、Debabrata Maiti、Anant R. Kapdi
DOI:10.1039/c7ob01723e
日期:——
A series of 2,3-disubstituted-4(3H)-quinazolinones were synthesised via a copper-catalysed Csp3–H functionalisation/cyclisation of 2-amino-N,N-dialkylbenzamides. In comparison to the reported methods this strategy allows an easy access to diversely substituted quinazolinones under mild conditions in air. The reaction also exhibits good functionalgroup tolerance and would be of value to heterocyclic
NHC-Catalyzed Benzylic C<sub>sp³</sub>-H Bond Activation of Alkylarenes and<i>N</i>-Benzylamines for the Synthesis of 3<i>H</i>-Quinazolin-4-ones: Experimental and Theoretical Study
作者:Anitha Alanthadka、E. Sankari Devi、Subbiah Nagarajan、Vellaisamy Sridharan、Ambigapathy Suvitha、C. Uma Maheswari
DOI:10.1002/ejoc.201600792
日期:2016.10
catalyzed benzylic Csp³–H bondactivation of alkylarenes and N-benzylamines under metal-free conditions was developed. This organocatalyzed oxidative transformation afforded the corresponding carbonyl derivatives in good to excellent yields. A variety of alkylarenes and N-benzylamines were tolerated under the optimized reaction conditions. The established method was further extended to the synthesis of biologically