The current status of O‐heterocycles: A synthetic and medicinal overview

PK Singh, O Silakari - ChemMedChem, 2018 - Wiley Online Library
O‐Heterocycles have been explored in the field of medicinal chemistry for a long time, but
their significance has not been duly recognised and they are often shunned in favour of N …

Recent advances in the ring-forming reactions of ynamides

Z **nyue, L Zongxian, W **ao-Na - Chinese Journal of Organic …, 2021 - sioc-journal.cn
As a subgroup of heteroatom-substituted alkynes, ynamide has unique structural
characteristics. The alkynyl group of ynamide is activated by the conjugation of nitrogen lone …

Cu(I)- or Ag(I)-Catalyzed Regio- and Stereocontrolled trans-Hydrofluorination of Ynamides

G He, S Qiu, H Huang, G Zhu, D Zhang, R Zhang… - Organic …, 2016 - ACS Publications
With Et3N· 3HF as the fluorinating reagent, a copper (I)-or silver (I)-catalyzed β/α-site-
regiocontrolled trans-hydrofluorination of alkynamides has been achieved, affording the …

Use of elemental sulfur or selenium in a novel one-pot copper-catalyzed tandem cyclization of functionalized ynamides leading to benzosultams

A Siva Reddy, KC Kumara Swamy - Organic Letters, 2015 - ACS Publications
A novel and efficient [Cu]-catalyzed one-pot regio-and stereospecific synthesis of benzo [1,
4, 2] dithiazine 1, 1-dioxides and benzo [1, 4, 2] thiaselenazine 1, 1-dioxides by cyclization of …

Utilization of copper-catalyzed carboarylation–ring closure for the synthesis of new oxazoline derivatives

Á Sinai, D Vangel, T Gáti, P Bombicz, Z Novák - Organic letters, 2015 - ACS Publications
A copper-catalyzed carboarylation–ring-closure strategy was used for the modular synthesis
of oxazolines via the reaction of 1-aryl-and 1-alkylpropargylamides and diaryliodonium salts …

Controlled synthesis of 1, 3, 5-oxadiazin-2-ones and oxazolones through regioselective iodocyclization of ynamides

H Huang, X Zhu, G He, Q Liu, J Fan, H Zhu - Organic Letters, 2015 - ACS Publications
Two efficient processes based on the iodocyclization of ynamides have been developed:(i)
N-alkynyl tert-butyloxycarbamates were found to undergo a rare 6-exo-dig ring closure …

Regio-and stereoselective hydrophosphorylation of ynamides for the synthesis of β-aminovinylphosphine oxides

H Huang, H Zhu, JY Kang - Organic Letters, 2018 - ACS Publications
A metal-free hydrophosphorylation of ynamides with diaryl phosphine oxides has been
developed. A highly E-selective and β-regioselective hydrophosphorylation protocol has …

Construction of 5-methyleneoxazolidine-2, 4-diones bearing modifiable halogen groups through a halopalladation strategy

H Zhan, B Chen, B Zhu, X Li, Z Han, J Sun… - Chemical …, 2023 - pubs.rsc.org
Based on a halopalladation strategy, we successfully developed a haloesterification
reaction of propargylic amides to synthesize a diverse range of 5-(halomethylene) …

Zinc Chloride Mediated Synthesis of 3H‐Oxazol‐2‐one and Pyrrolo‐oxazin‐1‐one from Ynamide

L Habert, R Sallio, M Durandetti… - European Journal of …, 2019 - Wiley Online Library
A simple zinc chloride mediated cyclization of ynamidyl N‐carbamates or 2‐ynamidyl‐
(hetero) arylcarboxylates is achieved under mild reaction conditions, leading to the …

Chemical fixation of CO2 to allylic (α-allenylic) amines: A green route to synthesis of functionalized 2-oxazolidones

E Vessally, A Hosseinian, L Edjlali… - Mini-Reviews in …, 2018 - ingentaconnect.com
2-Oxazolidones are an important class of nitrogen-containing heterocyclic compounds,
which have been found to have a wide range of applications as chiral auxiliaries and …