Hydroboration syn addition

Do not confuse the concepts of regiochemistry and stereochemistry. For instance, in addition reactions, the term anti-Markovnikov addition refers to the re-giochemistty of the addition, but the term anti refers to the stereochemistry of the addition. Smdents often confuse these concepts (probably because both terms have the word antF). It is possible for an addition reaction to be anti-Markovnikov and a syn addition (hydroboration is an example that you will learn about at some point in time). You must realize that regiochemistry and stereochemistry are two totally different concepts. 

A.2.3. Hydroboration-Oxidation Hydroboration is a stereospecific syn addition. Hydroboration is covered in further detail in Section 5.7. The reaction occurs by an electrophilic attack by borane or alkylborane on the double bond with a concerted shift... 

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See also in sourсe #XX -- [ ]

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