Rapid one-pot synthesis of tapered star copolymers via ultra-fast coupling of polystyryllithium chain ends

2019 ◽  
Vol 10 (14) ◽  
pp. 1762-1768 ◽  
Author(s):  
Philipp von Tiedemann ◽  
Kamil Maciol ◽  
Jasmin Preis ◽  
Paweł Sajkiewicz ◽  
Holger Frey

Efficient coupling of sterically demanding polystyryllithium (PS-Li) chain ends is achieved using tetra[3-(chloro-dimethylsilyl)propyl]silane (TCDMSPS) as a linking agent. This general approach is employed for the rapid synthesis of tapered star copolymers.

Polymer ◽  
2013 ◽  
Vol 54 (8) ◽  
pp. 1993-2000 ◽  
Author(s):  
Anna M. Fischer ◽  
Raphael Thiermann ◽  
Michael Maskos ◽  
Holger Frey

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 29948-29959
Author(s):  
Fateme Haji Norouzi ◽  
Naser Foroughifar ◽  
Alireza Khajeh-Amiri ◽  
Hoda Pasdar

A novel organic–inorganic nanohybrid superparamagnetic nanocatalyst (γ-Fe2O3@CPTMS–guanidine@SO3H) represents an efficient and green catalyst for the one-pot synthesis of quinazolin-4(3H)-one derivatives via a three-component condensation reaction.


2017 ◽  
Vol 4 (7) ◽  
pp. 1358-1362 ◽  
Author(s):  
Manikandan Selvaraju ◽  
Ying-Lien Wang ◽  
Chung-Ming Sun

A one pot synthesis of benzimidazole-fused isoindoles from 2-arylbenzimidazole and conjugated alkenes has been explored. The strategy involved the ruthenium-catalyzed formation of C–C and C–N bonds and a new five-membered ring.


2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim

In this article we describe an efficient approach for the synthesis of cyclic diaryliodonium salts. The method is based on benzyl alcohols as starting materials and consists of an Friedel-Crafts-arylation/oxidation sequence. Besides a deep optimization, particluar focusing on the choice and ratios of the utilized Bronsted-acids and oxidants, we explore the substrate scope of this transformation. We also discuss an interesting isomerism of cyclic iodonium salts substituted with aliphatic substituents at the bridge head carbon. <br>


2017 ◽  
Vol 7 (12) ◽  
pp. 1192-1195
Author(s):  
Y. I. Shaikh ◽  
G. M. Nazeruddin ◽  
Khursheed Ahmed

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