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view source for organic reaction wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in view source for organic reaction add languages article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file page information get shortened url switch to legacy parser in other projects wikidata item appearance move to sidebar hide organic reaction you do not have permission to edit this page for the following reason this ip address range has been globally blocked this does not affect your ability to read wikipedia pages most people who see this message have done nothing wrong some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism and can sometimes affect other users who are unrelated to that abuse review the information below for assistance if you do not believe that you have done anything wrong this block affects editing on all wikimedia wikis the ip address or range 5 135 0 0 16 has been globally blocked by jon kolbert for the following reason s open proxy webhost visit the faq if you are affected this block will expire on 04 29 8 january 2027 your current ip address is 5 135 42 194 even while globally blocked you will usually still be able to edit pages on meta wiki if you believe you were blocked by mistake you can find additional information and instructions in the stewards block wizard other useful links global blocks help i have been blocked you can view and copy the source of this page classifications organic chemistry has a strong tradition of naming a specific reaction to its inventor or inventors and a long list of organic reactions list of so called named reaction s exists conservatively estimated at 1000 a very old named reaction is the claisen rearrangement 1912 and a recent named reaction is the bingel reaction 1993 when the named reaction is difficult to pronounce or very long as in the corey house posner whitesides reaction it helps to use the abbreviation as in the cbs reduction the number of reactions hinting at the actual process taking place is much smaller for example the ene reaction or aldol reaction another approach to organic reactions is by type of organic reagent many of them inorganic compound inorganic required in a specific transformation the major types are oxidizing agent s such as osmium tetroxide reducing agent s such as lithium aluminium hydride base chemistry bases such as lithium diisopropylamide and acid s such as sulfuric acid finally reactions are also classified by mechanistic class commonly these classes are 1 polar 2 radical and 3 pericyclic polar reactions are characterized by the movement of electron pairs from a well defined source a nucleophile nucleophilic bond or lone pair to a well defined sink an electrophile electrophilic center with a low lying antibonding orbital participating atoms undergo changes in charge both in the formal sense as well as in terms of the actual electron density the vast majority of organic reactions fall under this category radical reactions are characterized by species with unpaired electrons radical chemistry radicals and the movement of single electrons radical reactions are further divided into chain propagation chain and nonchain processes finally pericyclic reaction s involve the redistribution of chemical bonds along a cyclic transition state although electron pairs are formally involved they move around in a cycle without a true source or sink these reactions require the continuous overlap of participating orbitals and are governed by woodward hoffmann rules orbital symmetry considerations of course some chemical processes may involve steps from two or even all three of these categories so this classification scheme is not necessarily straightforward or clear in all cases beyond these classes transition metal mediated reactions are often considered to form a fourth category of reactions although this category encompasses a broad range of elementary organometallic processes many of which have little in common and very specific return to organic reaction retrieved from https en wikipedia org wiki organic_reaction privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search view source for organic reaction add languages add topic