Markovnikov, VV (English spelling)

Japanese: Markovnikov，V.V.（英語表記）MarkovnikovVV

…(2) Addition reaction In the electrophilic addition reaction in which an asymmetric electrophilic reagent HX is added to an asymmetric alkene, the reagent proton H ⁺ is added to the alkene carbon with the most hydrogen, and the anion X ^- is added to the other carbon (the more substituted carbon), specifically (selectively) giving (C). This type of regiospecific addition is called Markovnikov addition, named after the Russian chemist Vladimir Vasil'evich Markovnikov, who first noticed and reported this phenomenon (1868). Markovnikov addition is explained by the difference in stability of the carbocation intermediate that is generated when a proton is added to an alkene. …

From [Markovnikov's rule]

...An empirical rule regarding the direction of addition when hydrogen halides, sulfuric acid, water, and other electrophilic reagents of the HX type are added to asymmetric alkenes such as propylene (CH ₃ CH=CH ₂₎ . This rule dictates that the main product is an adduct in which H is bonded to the carbon with more hydrogen atoms bonded to the carbon with more alkyl substitutions and X is bonded to the carbon with more alkyl substitutions. It was discovered in 1869 by Russian organic chemist Vladimir Vasil'evich Markovnikov (1838-1904). In these electrophilic addition reactions, carbocations are intermediates, and it is thought that the orientation is determined by the difference in their stability. ...

*Some of the terminology explanations that mention "Markovnikov, VV" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(2)付加反応非対称なアルケンに非対称な求電子試薬HXが付加する求電子付加反応において，試薬のプロトンH^＋はアルケン炭素のうち水素を多くもつものに，陰イオンX^－はもう一方の炭素(より置換された炭素)に付加し，特異(選択)的に(C)を与える。この型の位置特異性をもつ付加の様式を，最初にこの現象に注目し報告(1868)したロシア人化学者マルコフニコフVladimir Vasil’evich Markovnikovにちなんで，マルコフニコフ付加という。マルコフニコフ付加は，プロトンがアルケンに付加して生じるカルボカチオン中間体の安定性の差によって説明される。…

【マルコフニコフ則】より

…プロピレンCH₃CH＝CH₂のような非対称アルケンにハロゲン化水素，硫酸，水などHX型の求電子試薬が付加する際の，付加の方向に関する経験則。二つのアルケン炭素のうち，水素原子とより多く結合したほうの炭素にHが結合し，アルキル置換の多いほうの炭素にXが結合した付加物が主生成物となるという通則で，1869年にロシアの有機化学者マルコフニコフVladimir Vasil’evich Markovnikov(1838‐1904)により見いだされた。これら求電子付加反応ではカルボカチオンが中間体となり，その安定性の差によって配向性が決まるものと考えられる。…

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