Synthesis of 2-Amino-2′-hydroxy-1,1′-biaryls via Cascade Benzannulation and C–N Bond Cleavage Sequence
作者:Raju Adepu、Jadhav Rahul Dhanaji、Polasani Samatha、Prathama S. Mainkar、Srivari Chandrasekhar
DOI:10.1021/acs.orglett.0c02749
日期:2020.11.6
with indolyl β-ketonitrile/ester in a cascade manner is demonstrated. The reaction sequence involves benzyne-mediated [2 + 2] Stoltz-type cycloaddition–cleavage and intramolecular Michael addition followed by C–N bondcleavage under transition-metal-free reaction conditions. Interestingly, while [4 + 2] Diels–Alder reaction is a possible pathway, no traces of the regioisomer was isolated.