Undergraduate

modules

Modules

CHY8422 : Further Organic Chemistry

Semesters
Semester 1 Credit Value: 10
ECTS Credits: 5.0

Aims

To introduce and develop the concepts of thermal and photochemical pericyclic reactions and Frontier Molecular Orbital (FMO) theory; to describe the methods used to determine the mechanisms of such reactions; to discuss radical chemistry; to explore reactions involving radicals and ions in cyclisation reactions.

Outline Of Syllabus

Pericyclic reactions and Frontier Molecular Orbital Theory (FMO)
Dr JG Knight

1-3 Molecular Orbitals and revision of the application of Frontier MO theory to ionic (and radical) processes and relevance to Hard and Soft Acid and Base theory.
Construction of basic FMO's for linear conjugated pi-systems.
Introduction to pericyclic reactions.
4-6 Cycloaddition reactions. The Diels-Alder reaction: mechanism, Frontier-Orbital analysis, stereospecificity. The effect of substituents on FMO energies and coefficients. Stereoselectivity and regioselectivity in Diels-Alder reactions. Cheletropic reactions and 1,3-dipolar cycloadditions. Photochemical cycloaddition reactions. The Woodward-Hoffmann rules.
7-8 Electrocyclic reactions.
9-10 Sigmatropic reactions. Group transfer reactions.

Radical Reactions
Dr MJ Hall

1-2 Introduction to free radicals: generation of radicals (thermal, photochemical, electrochemical), properties and reactivity, SOMO, hard vs. soft.
3-4 Stoichiometric radical processes: removal of functional groups and other applications in synthesis.
5-7 Kinetics of radical reactions: chain reactions, polymerisation, the use of tin centred radicals, applications in synthesis, alternatives for tin.
8 Ring closing reactions: predicting ring closure with Baldwin’s rules and cascade processes.
9-10 Modern advances in radical chemistry

Teaching Methods

Teaching Activities
Category Activity Number Length Student Hours Comment
Scheduled Learning And Teaching ActivitiesLecture201:0020:00N/A
Guided Independent StudyAssessment preparation and completion200:5016:40Revision of end of semester examination
Guided Independent StudyAssessment preparation and completion12:002:00End of semester examination
Guided Independent StudyIndependent study161:2061:20Background reading
Total100:00
Teaching Rationale And Relationship

In lectures students learn advanced concepts in the organic chemistry of reactions involving cyclic transition states which, encompasses synthetic, theoretical and mechanistic principles. In workshops they apply learnt material to solve problems.

Assessment Methods

The format of resits will be determined by the Board of Examiners

Exams
Description Length Semester When Set Percentage Comment
Written Examination1201A100N/A
Assessment Rationale And Relationship

The examination will test the students’ knowledge and understanding of the content of this module in the context of both synthetic and mechanistic chemistry.

Study Abroad students may request to take their exam before the semester 1 exam period, in which case the format of the paper may differ from that shown in the MOF. Study Abroad students should contact the school to discuss this.

Reading Lists

Timetable