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1. Carbonyl alpha-substitution reactions: Alpha-substitution reactions occur at the position next to the carbonyl group, the α-position, and involve the substitution of an α hydrogen atom by an electrophile, E, through either an enol or enolate ion intermediate. Because their double bonds are electron ... (Chemistry) [100%] 2023-02-18 [Substitution reactions] [Organic reactions]...
2. Carbonyl α-substitution reactions: Alpha-substitution reactions occur at the position next to the carbonyl group, the α-position, and involve the substitution of an α hydrogen atom by an electrophile, E, through either an enol or enolate ion intermediate. Because their double bonds are electron ... (Chemistry) [100%] 2024-09-01 [Substitution reactions] [Organic reactions]...

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1. Substitution (theatre): In acting, substitution is the understanding of elements in the life of one's character by comparing them to elements in one's own life. For example, if an actor is portraying a character who is being blackmailed, they could ... (Theatre) [100%] 2023-11-24 [Acting techniques]
2. Substitution (logic): Substitution is a fundamental concept in logic. A substitution is a syntactic transformation on formal expressions. (Logic) [100%] 2022-07-12 [Propositional calculus] [Concepts in logic]...
3. Reactions: Redirect to:. [72%] 2024-01-05
4. Associative substitution: Associative substitution describes a pathway by which compounds interchange ligands. The terminology is typically applied to organometallic and coordination complexes, but resembles the Sn2 mechanism in organic chemistry. (Chemistry) [70%] 2023-09-18 [Substitution reactions] [Organometallic chemistry]...
5. Tritone substitution: The tritone substitution is a common chord substitution found in both jazz and classical music. Where jazz is concerned, it was the precursor to more complex substitution patterns like Coltrane changes. (Music Theory Concept) [70%] 2022-11-26 [Altered chords] [Chord substitution]...
6. Nukleophile Substitution: Die nukleophile Substitution ist ein Reaktionstyp in der organischen Chemie. Hierbei reagiert ein Nukleophil in Form einer Lewis-Base (Elektronenpaardonator) mit einer organischen Verbindung vom Typ R–X (R bezeichnet einen Alkyl- oder Arylrest, X ein elektronenziehendes Heteroatom). [70%] 2023-11-08
7. Dissociative substitution: In chemistry, dissociative substitution describes a reaction pathway by which compounds interchange ligands. The term is typically applied to coordination and organometallic complexes, but resembles the SN1 mechanism in organic chemistry. (Chemistry) [70%] 2024-01-02 [Substitution reactions] [Organometallic chemistry]...
8. Explicit substitution: In computer science, lambda calculi are said to have explicit substitutions if they pay special attention to the formalization of the process of substitution. This is in contrast to the standard lambda calculus where substitutions are performed by beta reductions ... [70%] 2023-11-08 [Lambda calculus]
9. Ipso-Substitution: Der Ausdruck ipso-Substitution wird in der organischen Chemie häufig in Verbindung mit einem speziellen Mechanismus der elektrophilen aromatischen Substitution verwendet. Die Bezeichnung „ipso“ (aus dem Lateinischen für „selbst“) soll zum Ausdruck bringen, dass der Substituent X selbst durch das ... [70%] 2023-06-09
10. Hazard substitution: Hazard substitution is a hazard control strategy in which a material or process is replaced with another that is less hazardous. Substitution is the second most effective of the five members of the hierarchy of hazard controls in protecting workers ... (Replacing a material or process with a lower risk alternative) [70%] 2023-12-25 [Safety engineering] [Risk analysis]...
11. Defensive substitution: A defensive substitution in the game of baseball occurs when a currently non-playing player is placed into the field in place of another player, typically due either to injury or the appearance of a pinch hitter. In the American ... (Substitute fielder in baseball or softball) [70%] 2023-02-25 [Baseball rules]
12. Nucleophilic substitution: In organic and inorganic chemistry, nucleophilic substitution is a fundamental class of substitution reaction in which an "electron rich" nucleophile selectively bonds with or attacks the positive charge of a group or atom called the leaving group; rarely referred to ... [70%] 2023-04-09 [Substitution reactions]
13. Nucleophilic substitution: A nucleophilic substitution is a class of chemical reactions in which an electron-rich chemical species (known as a nucleophile) replaces a functional group within another electron-deficient molecule (known as the electrophile). The molecule that contains the electrophile and ... (Chemistry) [70%] 2023-08-03 [Substitution reactions]
14. Substitution effect: Substitution effect : The tendency of consumers to switch spending to or from a product in response to a change in its price relative to that of a substitute. [70%] 2023-07-28
15. Currency substitution: Currency substitution is the use of a foreign currency in parallel to or instead of a domestic currency. The process is also known as dollarization or euroization when the foreign currency is the United States dollar or the euro, respectively. (Finance) [70%] 2023-09-20 [Foreign exchange market] [Monetary hegemony]...
16. Radical substitution: In organic chemistry, a radical-substitution reaction is a substitution reaction involving free radicals as a reactive intermediate. The reaction always involves at least two steps, and possibly a third. (Chemistry) [70%] 2023-12-20 [Free radical reactions] [Reaction mechanisms]...
17. Substitution bias: Substitution bias describes a possible bias in economic index numbers if they do not incorporate data on consumer expenditures switching from relatively more expensive products to cheaper ones as prices changed. Substitution bias occurs when prices for items change relative ... (Finance) [70%] 2022-07-11 [Price indices]
18. Diagnostic substitution: Diagnostic substitution is a phenomenon in which one label for a condition becomes replaced with another, causing an apparent decrease in the rate of the first condition and increase in the rate of the second. The best-known example is ... (Medicine) [70%] 2024-01-08 [Autism]