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 …

A facile procedure is reported for the synthesis of various 2-bromo-1-phenyl-5, 6-dihydro-3H,
7aH-benzo [b] pyrrolo [2, 1-c][1, 4] oxazin-3-ones via a radical bromination-induced ipso …

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

We present a facile switchable regioselective 7-endo or 6-exo iodocyclization of O-homoallyl
benzimidates here, which affords various iodo-substituted 1, 3-oxazines and tetrahydro-1, 3 …

Spirocyclic compounds are of increasing importance owing to their potential applications in
the development of new pharmaceuticals. Herein, we describe a new, rapid access to rarely …

Abstract An efficient [4+ 1] annulation between α-bromooximes and sulfur ylides via in situ
generation of nitrosoalkenes under mild basic reaction conditions has been developed …

A rhodium (II)-catalyzed reaction of cyclic nitronates (5, 6-dihydro-4 H-1, 2-oxazine N-
oxides) with vinyl diazoacetates proceeds as a [3+ 3]-annulation producing bicyclic …

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 …

Pyrido [2, 3-b][1, 4] oxazin-2-ones are conveniently prepared in excellent yields by a one-pot
annulation of N-substituted-2-chloroacetamides with 2-halo-3-hydroxypyridines with use of …