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

Cu-catalyzed synthesis of 3-etherified azaspiro [4.5] trienones from N-arylpropiolamides and
ethers is presented using TBHP oxidant. This is achieved through C (sp3)–H …

A strategy to functionalized spiro [4.5] trienones, by domino silver-catalyzed decarboxylative
acylation or alkylation/ipso-cyclization of N-arylpropiolamides with α-keto acids/alkyl …

An unprecedented copper-catalyzed ipso-annulation reaction of N-(p-methoxyaryl)
propiolamides with 1, 3-diketones has been developed, which enables the assembly of …

A new copper-catalyzed oxidative ipso-cyclization of N-(p-methoxyaryl) propiolamides with
disulfides for the synthesis of 3-(arylthio)-1-azaspiro [4.5] deca-3, 6, 9-triene-2, 8-diones has …

Abstract Azaspiro [4.5] trienones bearing ketone side chains at the 3‐position are prepared
from N‐alkyl‐arylpropiolamides and ketones via oxidative 1, 2‐difunctionalization of …

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 new route to producing 3‐alkyl spiro [4, 5] trienones via nickel‐promoted radical oxidative
ipso‐annulation of N‐(p‐methoxyaryl) propiolamides with α‐carbonyl alkyl bromides using …

This work showcases an unprecedented Au (III)-catalyzed cascade cyclization of 2-(4-
hydroxyalkynyl) benzoates to access benzannulated [5, 5]-oxaspirolactones related to …

A novel and direct oxidative spirocyclization of arylpropiolamides with sulfonylhydrazides
leading to 3-sulfonated azaspiro [4, 5] trienones has been developed under metal-free …