Degree of function

Failure severity The degree of functional degradation of equipment usually noted through deficient performance categorized by die terms catastrophic, degraded, and incipient. ... 

The intramolecular cycloaddition of a nitrile oxide (a 1,3-dipole) to an alkene is ideally suited for the regio- and stereocontrolled synthesis of fused polycyclic isoxazolines.16 The simultaneous creation of two new rings and the synthetic versatility of the isoxa-zoline substructure contribute significantly to the popularity of this cycloaddition process in organic synthesis. In spite of its high degree of functionalization, aldoxime 32 was regarded as a viable substrate for an intramolecular 1,3-dipolar cycloaddition reaction. Indeed, treatment of 32 (see Scheme 17) with sodium hypochlorite... 

The basic chemical structure of ion exchangers is the same for most of them. They are quite often formed by PS-DVB cross-linked frameworks, with different kind and degree of functionalization, cross-linking degree, specific surface area and porosity. The large-scale industrial production of PS-DVB resins started more than 50 years ago [40]. The ready availability of these materials attracted the attention of chemists interested into chemical synthesis... 

The principal goal of IBS treatment is to reduce or control symptoms. The treatment strategy is based on (1) the prevailing symptoms and their severity (2) the degree of functional... 

Allograft survival After an organ transplant procedure, when the transplanted organ continues to have some degree of function, from excellent to poor. 

We have previously (13) reported a rapid two step synthesis of 4-(pyrrolidino)pyridine copolymers via the reaction of commercially available maleic anhydride copolymers with 4-aminopyridine followed by reduction with LiAlH, yielding polymers with a high degree of functionalization. 

Electrochemical properties of the Ni11 macrocyclic complexes are related to the cavity size, the unsaturation, the degree of functionalization, and the subring moieties fused to the macrocycles.1467,1514,1581,1582... 

Mark returned to research after the modernization program was organized and operating smoothly. Limited to cellulose chemistry by the necessity of commercial feasibility, he studied cellulose acetate and the effect of the degree of acetylation on product solubility. At the same time he worked closely on the development of suitable analytical methods to measure molecular weight distribution and the degree of functionality. 

The results of the various methods used to determine the molecular weight and degree of functionality of the diamine are shown in Table II. All of this evidence is consistent with the conclusion that the purified, isolated diamine possesses high difunctionality. When the diamine was chain extended with terephthaloyl chloride, a polymer product with a symmetrical molecular weight distribution was obtained (D.P. a 10). Inexact stoichiometry is most probably responsible for the limited extent of chain extension. 

Grafting on the resin was achieved via a nucleophilic substitution of the benzylic chlorine by the deprotonated OH-linker of 52 (Scheme 29) by using a mixture of KO Bu, 18-crown-6 and CsBr. Determining the nitrogen content of solid phase samples by elemental analyses was accomplished, to verify the functionalization of the polymer. This enables calculation of the degree of functionalization. Usually, an occupancy of more than 20 percent of the theoretical sites was achieved. Saponification of the functionalized Merrifield resin P-52 leads to the monoanionic NJ, 0 functionalized solid phase. Subsequent reaction with [ReBrtCOlsJ afforded the polymer mounted tricarbonyl rhenium complex P-52-Re (Scheme 29). 

To the synthetic chemist the chiral cyanohydrins are extremely useful building blocks as they possess a high degree of functionality and are chiral compounds... 

The molar equivalent (X) is calculated based on the degree of functionality divided by 2 (,MW) t The parameter E = ——is used to simpUfy the plotting of the data. 

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