Spectroscopic and Other Properties of Large Ring Mono- and Dimeric Benzocyclanones Prepared by a High-dilution Friedel-Crafts Reaction1

1954 ◽  
Vol 76 (21) ◽  
pp. 5462-5466 ◽  
Author(s):  
W. M. Schubert ◽  
W. A. Sweeney ◽  
H. K. Latourette
Keyword(s):  
High Dilution ◽  
Large Ring

scholarly journals Advances in the Multi-Orthogonal Folding of Single Polymer Chains into Single-Chain Nanoparticles

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 293
Author(s):  
Agustín Blazquez-Martín ◽  
Ester Verde-Sesto ◽  
Angel J. Moreno ◽  
Arantxa Arbe ◽  
Juan Colmenero ◽  
...  
Keyword(s):  
Computer Simulations ◽  
Chemical Species ◽  
Synthetic Polymers ◽  
Review Article ◽  
Polymer Chains ◽  
Single Chain ◽  
High Dilution ◽  
Covalent Bonds ◽  
Covalent Interactions ◽  
Individual Polymer

The folding of certain proteins (e.g., enzymes) into perfectly defined 3D conformations via multi-orthogonal interactions is critical to their function. Concerning synthetic polymers chains, the “folding” of individual polymer chains at high dilution via intra-chain interactions leads to so-called single-chain nanoparticles (SCNPs). This review article describes the advances carried out in recent years in the folding of single polymer chains into discrete SCNPs via multi-orthogonal interactions using different reactive chemical species where intra-chain bonding only occurs between groups of the same species. First, we summarize results from computer simulations of multi-orthogonally folded SCNPs. Next, we comprehensively review multi-orthogonally folded SCNPs synthesized via either non-covalent bonds or covalent interactions. Finally, we conclude by summarizing recent research about multi-orthogonally folded SCNPs prepared through both reversible (dynamic) and permanent bonds.

The 4-(methylthio)phenyl ester for the synthesis of polypeptides of a known repeating sequence of amino acids. Synthesis of poly-(L-lysylglycyl)glycine 1-C14 ethyl ester hydrobromide

1970 ◽  
Vol 48 (16) ◽  
pp. 2509-2511 ◽  
Author(s):  
Brian J. Johnson ◽  
Donna S. Rea
Keyword(s):  
Amino Acids ◽  
Ethyl Ester ◽  
Title Compound ◽  
Ester Hydrochloride ◽  
Phenyl Ester ◽  
Protecting Group ◽  
High Dilution ◽  
Protective Groups ◽  
Protected Tetrapeptide

The synthesis of the tetrapeptide, N-t-butoxycarbonyl-ε-N-carbobenzoxy-L-lysylglycyl-ε-N-carbobenzoxy-L-lysylglycine 4-(methylthio)phenyl ester is described. The utility of this protective ester is shown by its easy conversion to the protected tetrapeptide 4-(methylsulfonyl)phenyl activated ester without decomposition. Removal of the N-butoxycarbonyl protecting group afforded the polymerizing unit, ε-N-carbobenzoxy-L-lysylglycyl-ε-N-carbobenzoxy-L-lysylglycine 4-(methylsulfonyl)phenyl ester. Polymerization of this material on the partially blocked monomer glycine-1-C14 ethyl ester hydrochloride, at a relatively high dilution, gave poly-(ε-N-carbobenzoxyl-L-lysylglycyl)glycine-1-C14 ethyl ester. The carbobenzoxy protective groups were removed to give the title compound.

scholarly journals A network of heterodyne laser interferometers for monitoring and control of large ring-lasers

2016 ◽  
Author(s):  
Alberto Donazzan ◽  
Giampiero Naletto ◽  
Maria G. Pelizzo ◽  
Davide Cuccato ◽  
Alessandro Beghi ◽  
...  
Keyword(s):  
Monitoring And Control ◽  
Large Ring ◽  
Ring Lasers ◽  
And Control ◽  
Laser Interferometers

A New Catalytic System for the Selective Aerobic Oxidation of Large Ring Cycloalkanes to Ketones

2003 ◽  
Vol 7 (3) ◽  
pp. 426-428 ◽  
Author(s):  
Xavier Baucherel ◽  
Isabel W. C. E. Arends ◽  
S. Ellwood ◽  
Roger A. Sheldon
Keyword(s):  
Catalytic System ◽  
Aerobic Oxidation ◽  
Large Ring ◽  
Selective Aerobic Oxidation
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