✦ LIBER ✦

Highly efficient methods for the preparation of shape-persistent macrocyclics

✍ Scribed by Sigurd Höger

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 375 KB
Volume: 37
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(19990801)37:15<2685::aid-pola1>3.0.co;2-s

No coin nor oath required. For personal study only.

✦ Synopsis

It has been about 25 years since Staab prepared a hexameric phenyl-ethynyl macrocycle by the statistical cyclization of the copper salt of m-iodo-phenylacetylene in 4.6% yield. Since that time, different methodologies have been investigated that allow not only the preparation of selec-tively functionalized structures, but also their formation in high yields. The repetitive formation of precursors followed by an intramolecular cyclization is only one approach to these structures. Alternatives include the use of covalently or noncovalently bound templates, as well as cyclization under ther-modynamic control.

📜 SIMILAR VOLUMES

An Efficient and Improved Method for the

An Efficient and Improved Method for the Preparation of Nitriles from Primary Amides and Aldoximes†

✍ A. Venkat Narsaiah; K. Nagaiah 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 132 KB 👁 2 views

A General and Efficient Method for the P

A General and Efficient Method for the Preparation of β-Enamino Ketones and Esters Catalyzed by Indium Tribromide

✍ Zhan-Hui Zhang; Liang Yin; Yong-Mei Wang 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 93 KB

Amino Acids, XIV; (±)-Pipecolic Acid Der

Amino Acids, XIV; (±)-Pipecolic Acid Derivatives, IV: An Efficient Synthetic Method for the Preparation of (±)-Baikiain and its Derivatives

✍ Claus Herdeis; Wolfram Engel 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 447 KB

An Efficient Method for the Preparation

An Efficient Method for the Preparation of 1′α-Branched-Chain Sugar Pyrimidine Ribonucleosides from Uridine: The First Conversion of a Natural Nucleoside into 1′-Substituted Ribonucleosides

✍ Tetsuya Kodama; Satoshi Shuto; Makoto Nomura; Akira Matsuda 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 188 KB 👁 1 views

Production of micron-sized monodispersed

Production of micron-sized monodispersed polymer particles by seeded polymerization for the dispersion of highly monomer-swollen particles prepared with submicron-sized polymer seed particles utilizing the dynamic swelling method

✍ M. Okubo; E. Ise; T. Yamashita 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 205 KB 👁 2 views

For the purpose of extending the size range of polymer seed particles used in "dynamic swelling method" (DSM), first it was verified theoretically that the submicron-sized polymer particles produced by emulsion polymerization can also absorb a large amount of monomer by DSM in both equilibrium and k

Synthesis of greater than 10-μm-sized, m

Synthesis of greater than 10-μm-sized, monodispersed polymer particles by one-step seeded polymerization for highly monomer-swollen polymer particles prepared utilizing the dynamic swelling method

✍ M. Okubo; E. Ise; T. Yamashita 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 223 KB 👁 1 views

The thermodynamic simulation under the kinetic control state indicates that 1.77-m-sized monodispersed polystyrene (PS) particles can absorb 500 times the amount of the styrene monomer with keeping the monodispersity by the "dynamic swelling method" (DSM) which the authors proposed in 1991. Actually