AQA Jun 2011 Paper 4 Q8

Answers available below

do not write outside the box the hydrocarbons benzene and cyclohexene are both unsaturated compounds benzene normally undergoes substitution reactions but cyclohexene normally undergoes addition reactions a the molecule cyclohexatriene does not exist and is described as hypothetical use the following data to state and explain the stability of benzene compared with the hypothetical cyclohexatriene h h h kj mol h kj mol marks extra space question continues on the next page turn over wmp jun chem do not write outside the box b benzene can be converted into amine u by the two step synthesis shown below reaction no reaction nh the mechanism of reaction involves attack by an electrophile give the reagents used to produce the electrophile needed in reaction write an equation showing the formation of this electrophile outline a mechanism for the reaction of this electrophile with benzene marks extra space wmp jun chem c cyclohexene can be converted into amine w by the two step synthesis shown below do not write outside the box reaction compound reaction nh suggest an identity for compound v for reaction give the reagent used and name the mechanism for reaction give the reagent and condition used and name the mechanism equations and mechanisms with curly arrows are not required marks extra space question continues on the next page turn over wmp jun chem d explain why amine u is a weaker base than amine w do not write outside the box marks extra space end of questions acknowledgement of copyright holders and publishers question extracts from www ecpi org copyright aqa and its licensors all rights reserved wmp jun chem

Show answer