hindered reaction

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• reaction mechanism — Introduction       in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… …   Universalium

• Wittig reaction — The Wittig reaction is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide. [cite journal author = Georg Wittig, Ulrich Schöllkopf journal …   Wikipedia

• Aldol reaction — The aldol reaction is a powerful means of forming carbon–carbon bonds in organic chemistry.[1][2][3] Discovered independently by …   Wikipedia

• Heck reaction — The Heck reaction (also called the Mizoroki Heck reaction)[1] is the chemical reaction of an unsaturated halide (or triflate) with an alkene and a base and palladium catalyst to form a substituted alkene.[2][3] Together with the other palladium… …   Wikipedia

• Nitroaldol reaction — The Henry Reaction (also referred to as the nitro aldol reaction) is a classic carbon–carbon bond formation reaction in organic chemistry. Discovered in 1895 by L. Henry, it is the combination of a nitroalkane and an aldehyde or ketone in the… …   Wikipedia

• Chain reaction — This article is about chain reactions in chemistry and physics. For other uses, see Chain reaction (disambiguation). A chain reaction is a sequence of reactions where a reactive product or by product causes additional reactions to take place. In… …   Wikipedia

• Elimination reaction — An elimination reaction is a type of organic reaction in which two substituents are removed from a molecule in either a one or two step mechanism [JerryMarch] . Either the unsaturation of the molecule increases (as in most organic elimination… …   Wikipedia

• SN2 reaction — The SN2 reaction (also known as bimolecular nucleophilic substitution) is a type of nucleophilic substitution, where a lone pair from a nucleophile attacks an electron deficient electrophilic center and bonds to it, expelling another group called …   Wikipedia

• Grignard reaction — The Grignard reaction, named for the French chemist François Auguste Victor Grignard, is an organometallic chemical reaction in which alkyl or aryl magnesium halides (Grignard reagents), which act as nucleophiles, attack electrophilic carbon… …   Wikipedia

• Barton-Kellogg reaction — The Barton Kellogg reaction is a coupling reaction between a ketone and a thioketone through a diazo intermediate forming an alkene.[1][2][3] …   Wikipedia

• Simmons-Smith reaction — The Simmons Smith reaction is an organic reaction in which a carbenoid reacts with an alkene (or alkyne) to form a cyclopropane. [cite journal | author = Howard Ensign Simmons, Jr.; Smith, R.D. | title = 4 Substituted 2,3,5 pyrrolidinetriones |… …   Wikipedia