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- Protecting_group abstract "A protecting group or protective group is introduced into a molecule by chemical modification of a functional group to obtain chemoselectivity in a subsequent chemical reaction. It plays an important role in multistep organic synthesis. In many preparations of delicate organic compounds, some specific parts of their molecules cannot survive the required reagents or chemical environments. Then, these parts, or groups, must be protected. For example, lithium aluminium hydride is a highly reactive but useful reagent capable of reducing esters to alcohols. It will always react with carbonyl groups, and this cannot be discouraged by any means. When a reduction of an ester is required in the presence of a carbonyl, the attack of the hydride on the carbonyl has to be prevented. For example, the carbonyl is converted into an acetal, which does not react with hydrides. The acetal is then called a protecting group for the carbonyl. After the step involving the hydride is complete, the acetal is removed (by reacting it with an aqueous acid), giving back the original carbonyl. This step is called deprotection. Protecting groups are more commonly used in small-scale laboratory work and initial development than in industrial production processes because their use adds additional steps and material costs to the process. However, the availability of a cheap chiral building block can overcome these additional costs (e.g. shikimic acid for oseltamivir).".
- Protecting_group thumbnail Acetal-protection-example.png?width=300.
- Protecting_group wikiPageExternalLink spip.php?article332.
- Protecting_group wikiPageExternalLink 04-2007-S-CHE535.pdf.
- Protecting_group wikiPageExternalLink protectivegroups.
- Protecting_group wikiPageExternalLink protecting-groups.
- Protecting_group wikiPageExternalLink A803688H.pdf.
- Protecting_group wikiPageExternalLink protect.pdf.
- Protecting_group wikiPageID "520042".
- Protecting_group wikiPageRevisionID "603533025".
- Protecting_group hasPhotoCollection Protecting_group.
- Protecting_group subject Category:Chemical_synthesis.
- Protecting_group subject Category:Protecting_groups.
- Protecting_group type Abstraction100002137.
- Protecting_group type Group100031264.
- Protecting_group type ProtectingGroups.
- Protecting_group comment "A protecting group or protective group is introduced into a molecule by chemical modification of a functional group to obtain chemoselectivity in a subsequent chemical reaction. It plays an important role in multistep organic synthesis. In many preparations of delicate organic compounds, some specific parts of their molecules cannot survive the required reagents or chemical environments. Then, these parts, or groups, must be protected.".
- Protecting_group label "Beschermende groep".
- Protecting_group label "Groupe protecteur".
- Protecting_group label "Grupo protector".
- Protecting_group label "Grupo protetor".
- Protecting_group label "Gruppo protettivo".
- Protecting_group label "Protecting group".
- Protecting_group label "Schutzgruppe".
- Protecting_group label "Защитная группа".
- Protecting_group label "保护基".
- Protecting_group label "保護基".
- Protecting_group sameAs Schutzgruppe.
- Protecting_group sameAs Grupo_protector.
- Protecting_group sameAs Groupe_protecteur.
- Protecting_group sameAs Gruppo_protettivo.
- Protecting_group sameAs 保護基.
- Protecting_group sameAs Beschermende_groep.
- Protecting_group sameAs Grupo_protetor.
- Protecting_group sameAs m.02kz3s.
- Protecting_group sameAs Q898525.
- Protecting_group sameAs Q898525.
- Protecting_group sameAs Protecting_group.
- Protecting_group wasDerivedFrom Protecting_group?oldid=603533025.
- Protecting_group depiction Acetal-protection-example.png.
- Protecting_group isPrimaryTopicOf Protecting_group.
