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 …

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 …

The development of green and sustainable approaches for the synthesis of small molecules
is always in demand. Oxetanes and azetidines are strained heterocycles that possess …

A new, mild route for the assembly of 3-iodo-1-azaspiro [4.5] deca-6, 9-diene-2, 8-diones via
an electrophilic ipso-cyclization strategy is presented. In the presence of iodine …

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 new radical cyclization has been developed for the one-step synthesis of spiro
dihydroisoquinolinone derivatives from alicyclic amino acids bearing N-(2-phenyl) benzoyl …

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 …

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 …

Structurally novel 2-azaspiro [4.5] deca-1, 6, 9-trien-8-ones were synthesized from N-(2-
propyn-1-yl) amides and 1, 3, 5-trimethoxybenzenes by a tandem method consisting of a …

A metal‐free one‐pot approach towards a highly stereoselective synthesis of N‐substituted
spiro‐azacyclodienones, dihydro spiro‐azacyclodienones and spiro‐lactams have been …