NHC-Catalyzed Oxidative Cyclization Reactions of 2-Alkynylbenzaldehydes under Aerobic Conditions: Synthesis of O-Heterocycles

2011 ◽  
Vol 13 (9) ◽  
pp. 2228-2231 ◽  
Author(s):  
Jong Hyub Park ◽  
Sachin V. Bhilare ◽  
So Won Youn
Keyword(s):  
Oxidative Cyclization ◽  
Cyclization Reactions ◽  
Aerobic Conditions

scholarly journals Pt(II)-Decorated Covalent Organic Framework for Photocatalytic Difluoroalkylation and Oxidative Cyclization Reactions

2021 ◽  
Vol 13 (5) ◽  
pp. 6349-6358
Author(s):  
Zainab Almansaf ◽  
Jiyun Hu ◽  
Federica Zanca ◽  
Hamid R. Shahsavari ◽  
Benjamin Kampmeyer ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Cyclization Reactions ◽  
Covalent Organic Framework ◽  
Organic Framework

scholarly journals Oxidative cyclo-rearrangement of helicenes into chiral nanographenes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chengshuo Shen ◽  
Guoli Zhang ◽  
Yongle Ding ◽  
Na Yang ◽  
Fuwei Gan ◽  
...  
Keyword(s):  
Functional Materials ◽  
Optical Devices ◽  
Oxidative Cyclization ◽  
Synthetic Chemistry ◽  
Aromatic Rings ◽  
Cyclization Reactions ◽  
Rearrangement Reaction ◽  
Skeletal Reconstruction ◽  
Gradual Release

AbstractNanographenes are emerging as a distinctive class of functional materials for electronic and optical devices. It is of remarkable significance to enrich the precise synthetic chemistry for these molecules. Herein, we develop a facile strategy to recompose helicenes into chiral nanographenes through a unique oxidative cyclo-rearrangement reaction. Helicenes with 7~9 ortho-fused aromatic rings are firstly oxidized and cyclized, and subsequently rearranged into nanographenes with an unsymmetrical helicoid shape through sequential 1,2-migrations. Such skeletal reconstruction is virtually driven by the gradual release of the strain of the highly distorted helicene skeleton. Importantly, the chirality of the helicene precursor can be integrally inherited by the resulting nanographene. Thus, a series of chiral nanographenes are prepared from a variety of carbohelicenes and heterohelicenes. Moreover, such cyclo-rearrangement reaction can be sequentially or simultaneously associated with conventional oxidative cyclization reactions to ulteriorly enrich the geometry diversity of nanographenes, aiming at innovative properties.

Synthesis of Benzazoles through Electrochemical Oxidative Cyclization Reactions

2020 ◽  
Vol 7 (19) ◽  
pp. 3969-3974
Author(s):  
Qi An ◽  
Chaoyin He ◽  
Xiaodong Fan ◽  
Chuanfu Hou ◽  
Jian Zhao ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Cyclization Reactions

scholarly journals An Efficient One-Pot Multicomponent Synthesis of Tetracyclic Quinazolino[4,3-b]quinazolines by Sequential C–N Bond Formation and Copper-Mediated Aerobic Oxidative Cyclization

Synlett ◽  
2018 ◽  
Vol 29 (13) ◽  
pp. 1717-1722 ◽  
Author(s):  
Manjula Alla ◽  
Gal Potuganti ◽  
Divakar Indukuri
Keyword(s):  
Bond Formation ◽  
Nitrogen Sources ◽  
Oxidative Cyclization ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Aerobic Conditions ◽  
One Pot Synthesis ◽  
Quinazoline Derivatives

An efficient one-pot synthesis of quinazolino[4,3-b]quinazoline derivatives has been accomplished, starting from 2-(2-bromo­phenyl)quinazolin-4(3H)-one, aldehydes, and various nitrogen sources under aerobic conditions. The multicomponent protocol is mediated by copper(I) salts and involves amination of 2-(2-bromophenyl)quinazolin-4(3H)-one, followed by condensation with the aldehyde and an oxidative cyclization to give the target compounds in moderate to good yields.

ChemInform Abstract: Preparation of Dibenzo[e,g]isoindol-1-ones via Scholl-Type Oxidative Cyclization Reactions.

ChemInform ◽  
2015 ◽  
Vol 46 (10) ◽  
pp. no-no
Author(s):  
Amy A. van Loon ◽  
Maeve K. Holton ◽  
Catherine R. Downey ◽  
Taryn M. White ◽  
Carly E. Rolph ◽  
...  
Keyword(s):  
Oxidative Cyclization ◽  
Cyclization Reactions

Oxidative Cyclization Reactions:  Amide Trapping Groups and the Synthesis of Furanones

2005 ◽  
Vol 7 (16) ◽  
pp. 3553-3556 ◽  
Author(s):  
John D. Brandt ◽  
Kevin D. Moeller
Keyword(s):  
Oxidative Cyclization ◽  
Cyclization Reactions
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