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With the introduction of the synthesis essay in 2007, the College Board allotted 15 additional minutes to the free-response exam portion to allow students to read and annotate the three prompts, as well as the passages and sources provided. During the reading time, students may read the prompts and examine the documents.
The Jane Schaffer method is a formula for essay writing that is taught in some U.S. middle schools and high schools.Developed by a San Diego teacher named Jane Schaffer, who started offering training and a 45-day curriculum in 1995, it is intended to help students who struggle with structuring essays by providing a framework.
Research synthesis or evidence synthesis is the process of combining the results of multiple primary research studies aimed at testing the same conceptual hypothesis. It may be applied to either quantitative [1] or qualitative research. [2] Its general goals are to make the findings from multiple different studies more generalizable and ...
The synthesis of epoxides via this method serves as an important retrosynthetic alternative to the traditional epoxidation reactions of olefins. Johnson–Corey–Chaykovsky Reaction. The reaction is most often employed for epoxidation via methylene transfer, and to this end has been used in several notable total syntheses (See Synthesis of ...
Enantioselective synthesis, also called asymmetric synthesis, [1] is a form of chemical synthesis.It is defined by IUPAC as "a chemical reaction (or reaction sequence) in which one or more new elements of chirality are formed in a substrate molecule and which produces the stereoisomeric (enantiomeric or diastereomeric) products in unequal amounts."
[3] [4] This has inspired the work of his student Paul Rothemund to develop a simple one pot synthesis of porphyrins. In 1935, Paul Rothemund reported the formation of porphyrin, from a simple reaction of pyrrole with gaseous acetaldehyde or formaldehyde in methanol followed by treatment with various concentrations of hydrochloric acid . [ 5 ]
A large scale application of the Ritter reaction is in the synthesis of tert-octylamine, by way of the intermediate formamide.This process was originally described by Ritter in 1948, [11] and an estimated 10,000 tons/y (year: 2000) of this and related lipophilic amines are prepared in this way. [12]
Sample-based synthesis is a form of audio synthesis that can be contrasted to either subtractive synthesis or additive synthesis.The principal difference with sample-based synthesis is that the seed waveforms are sampled sounds or instruments instead of fundamental waveforms such as sine and saw waves used in other types of synthesis.