Titlebook: Macrocyclic Polyether Syntheses; George W. Gokel,Stephen H. Korzeniowski Book 1982 Springer-Verlag Berlin Heidelberg 1982 Amine.Catalysis.

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ASSAY

Miscellaneous Macrocycles,Although it has been known for many years that ethylene oxide and formaldehyde can form statistical copolymers, it was not until the interest in crown ethers developed that the potential of macrocyclic formals as complexing agents was recognized.

FUSE

Reactivity and Structure: Concepts in Organic Chemistryhttp://image.papertrans.cn/m/image/620974.jpg

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COUCH

提名的名单

Open-chained Equivalents of Crown Ethers,there is considerable literature in this area, much of it relates to the use of simple polyethylene glycols in phase transfer processes. Since our main concern in this monograph is with novel structures, we will discuss these simple examples further only briefly, below.

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Book 1982perspective, at least two rational reasons for conducting this cataloging and organizational effort. The first of these is the obvious fact that a very large number of macrocyclic polyethers have now been prepared and nowhere is there a comprehensive listing of them. A number of excellent reviews ha

Salivary-Gland

antiquated

Cryptands and Related Polycyclic Systems,ffording the macrobicyclic diamide . in 45% yield. Reduction using diborane afforded the compound called [2.2.2]-cryptand (.) as its bis-borane adduct. Removal of the borane residues could be effected by treatment with 6 N HC1 affording . in more than 90% yield from .. The overall yield for the process was about 25%.

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The Template Effect,en reported involve less than dilute if not very concentrated conditions.. The success of these large-ring intramolecular S.2 reactions is generally attributed to the operation of a “template” effect during crown synthesis.