In this work, a selective synthetic strategy towards 1-azaspiro [4.5] deca-3, 6, 9-trien-8-ones
from N-tosyl-N-(prop-2-yn-1-yl) aniline is developed. The transformation proceeds smoothly …

A facile protocol for the tunable synthesis of 10-hydroxy-1-azaspiro [4.5] deca-3, 6, 8-trien-2-
ones and benzo [b] pyrrolo [2, 1-c][1, 4] oxazin-3-ones is described. A tunable synthesis has …

ZnBr2-Mediated oxidative spiro-bromocyclization of N-arylpropiolamide has been described
herein for the synthesis of 3-bromo-1-azaspiro [4.5] deca-3, 6, 9-triene-2, 8-dione with high …

A metal-and oxidant-free route for affording azaspiro [4.5] deca-6, 9-diene-3, 8-dione via
photomediated iodinated spirocyclization of N-(4-methoxybenzyl) propiolamide has been …

An unprecedented metal-free dimethyl sulfoxide (DMSO) and N-iodosuccinimide mediated
regioselective 5-exo-dig oxidative cyclization of an in situ generated enol equivalent of …

Ceric ammonium nitrate (CAN)-promoted oxidative ipso-cyclization of unactivated biaryl
ynones with S-centered radicals (SCN/SCF3) to access spiro [5, 5] trienones has been …

A metal-free oxidative cascade acylation and dearomatization of N-(p-methoxyaryl)
propiolamides was achieved via K2S2O8 mediated decarboxylation of α-oxocarboxylic …

A highly regioselective divergent approach is reported for the synthesis of both indeno [2, 1-
c] pyran-3-one and 1-oxazolonylisobenzofuran derivatives using the Erlenmeyer–Plöchl …

A TBAB‐mediated radical 5‐exo‐trig ipso‐cyclization of N‐aryl‐2‐arylbenzamide is
described herein for the synthesis of spiro [cyclohexane‐1, 1′‐isoindoline]‐2, 5‐diene‐3 …

Based on the importance of the two classes of nitrogen-containing heterocyclic structures,
isoindolinones and isoquinolinones, herein, through intramolecular cascade cyclization via …