Advanced Organic Chemistry: verschil tussen versies

Versie van 22 jan 2019 13:57

Explain the following reaction.
How is given cyclopropane synthesized from diethyl malonate in several steps? Choose reagents such that a maximal yield is obtained.
This reaction scheme is an example of a benzannelation reaction. Upon heating, several consecutive steps happen so that the given end product is obtained. Among these steps are three electrocyclic reactions (two 4-electron and one 6-electron), a tautomerization, and a cycloaddition (not necessarily in this order).
Explain formation of this product in presence of base.
Give product A and explain how this reaction occurs.
What products will be formed in following reactions?

@@ Regel 5: / Regel 5: @@
 [[Categorie:Machemie]]
+===21 januari 2019 VM===
+====Examen====
+[[Bestand:ExamAdvOrg21jan2019.png|800px]]
+====Oplossingen====
+[[Media:SolutionsAdvOrg21jan2019jpg.jpg]]
+===28 januari 2013 NM===
 [[Media:Examen organische chemie 23-01-2017.jpeg]]
-===28 januari 2013 NM===
 #Explain the following reaction. [[Bestand:org1.png]]
 #How is given cyclopropane synthesized from diethyl malonate in several steps? Choose reagents such that a maximal yield is obtained. [[Bestand:org2.png]]