Disconnections symbol

Disconnection An analytical operation, which breaks a bond and converts a molecule into a possible starting material. The reverse of a chemical reaction. Symbol and a curved line drawn through the bond being broken. Called a dislocation by some people. 

FGI Functional Group Interconversion The operation of writing one functional group for another so that disconnection becomes possible. Again the reverse of a chemical reaction. Symbol with FGI written over it. 

The initial step in creating a synthetic plan involves a retrosynthetic analysis. The structure of the molecule is dissected step by step along reasonable pathways to successively simpler compounds until molecules that are acceptable as starting materials are identified. Several factors enter into this process, and all are closely interrelated. The recognition of bond disconnections allows the molecule to be broken down into key intermediates. Such disconnections must be made in such a way that it is feasible to form the bonds by some synthetic process. The relative placement of potential functionality strongly influences which bond disconnections are preferred. To emphasize that these disconnections must correspond to transformations that can be conducted in the synthetic sense, they are sometimes called antisynthetic transforms, i.e., the reverse of synthetic steps. An open arrow symbol, = , is used to indicate an antisynthetic transform. 

The symbol => denotes a disconnection, an analytical process in which a structure is transformed into a suitable precursor... 

The construction of a synthetic tree by working backward from the target molecule (TM) is called retro synthetic analysis or antithesis. The symbol ==> signifies a reverse synthetic step and is called a transform. The main transforms are disconnections, or cleavage of C-C bonds, md functional group interconversions (FGI). 

In the previous chapter, we explored the assertion within multiracial discourse that consensual sexual relations between white male slaveholders and enslaved black females allowed genuine interracial intimacy to flourish under the regime of chattel slavery in the antebellum United States. We found the assertion to be not only unsupported on its own terms but also entirely misplaced given the questions at hand—an ethical evasion of the foreclosure of black female consent under the conditions of enslavement, as detailed by a number of noted black feminist scholars. Further, the peculiar historical demand for black female sexual consent in relations with white male slaveholders symbolizes for multiracial advocates a broader problem oipolitical consent from the captive community and its descendents for the project of multiracial democracy up to the present moment. The objective of the current chapter is to reveal the notion of healthy interracial relationships advanced within multiracial discourse as an ideological lure insofar as they are considered to be disconnected from supposedly unhealthy interracial liaisons and, beyond that, a real union of differently... 

The connection table consisted of the normal atom symbol and bonding information fields and included extra fields for atom charges and masses as well as the (x,y) coordinates for each atom. Additional information was present for the strings of characters used for molecular formulas, for dot disconnect moieties, and for ill-defined structures where only the formula was known for a portion of the structure. 

Mains disconnect devices must meet these requirements (1) 3 mm minimum contact separation, (2) connected close to incoming supply, and (3) clearly marked with the symbols I for ON and O for OFF. 

B. Mains Disconnect Switches Mains disconnect switches are required on all machines to isolate the entire electrical equipment. The OFF position must be lockable, lEC symbols for ON/OFF positions must be present and meet the relevant EU standards for construction and operation, which is assured if the device... 

This book does not aim to give a detailed account of electrochemical applications. However, certain electrochemical applications are mentioned in illustrated boards in order to show that the concepts covered are not disconnected from technological reality. These explanations can be read separately from the core of the text. To find them in the table of contents, their titles are shaded in and designated by the symbol... 

Despite the powerful overall image with which the Silver Age went down in history, it was also an epoch of rapidly evolving and diverse trends. Its major watershed appeared around the year 1910, which divided the Silver Age into two seemingly disconnected yet related stages Symbolism and post-Symbolism (or avant-garde ). The latter in its turn took a bifurcated path due to the rivalry between the two dominant schools of the Acmeists and the Futurists , which had little in common with each other, but which nevertheless adopted and transformed, each in its own way, the Symbolist heritage. 

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