First year mechanisms
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Reactive Intermediates Mechanisms
Displaying 80 mechanisms:
Carbenes- (Carbenoid) Simmons-Smith cyclopropanation
Carbenes- 1,2-shift to form alkene
Carbenes- 1,2-shift to form alkyne
Carbenes- 1,2-shift with 3-membered ring
Carbenes- addition to alkenes- singlet (concerted mechanism)
Carbenes- addition to alkenes- triplet (stepwise mechanism)
Carbenes- Arndt-Ernst to form ester
Carbenes- C-H insertion
Carbenes- C-H insertion to form three-membered ring
Carbenes- carbenoids Rh2(OAc)4 cyclisation
Carbenes- Eschenmoser Fragmentation
Carbenes- ester formation from alcohols
Carbenes- Generation from RNNHTs followed by C-H insertion (9 membered ring)
Carbenes- intramolecular C-H insertion on alkene to form alkyne (three equiv. MeLi)
Carbenes- nucleophilic addition
Carbenes- preparation from acyl chloride and diazomethane
Carbenes- Preparation from bicyclic compound- gives napthalene
Carbenes- Preparation from CCl3H (alpha-elimination)
Carbenes- Preparation from diazo compounds
Carbenes- Preparation from ketenes
Carbenes- preparation from tosyl hydrazines
Carbenes- Preparation of diazo compounds
Carbenes- preparation of diazomethane
Carbenes- reaction of diazomethane with carboxylic acids
Carbenes- reaction with benzene to form cycloheptatriene
Carbenes- reaction with phenol to form aldehyde
Carbenes- reaction with pyrrole to form pyridine
Carbenes- Simmons-Smith reaction
Carbenes- Wolff-rearrangement- add an extra CH2 to a ketone
Ketenes- dimerisation
Ketenes- Preparation during ester formation using acyl chloride
Ketenes- Preparation from beta-chloro acyl chloride and Zn
Ketenes- Preparation from cyclic di-ester
Ketenes- Preparation from Wolff-Rearrangement
Ketenes- reaction with nucleophile
Ketenes- [2+2] cylco-addtions (to ketone/alkene)
Ketenes- [2,2] Cycloaddition- antarifacial, suprafacial molecular overlap
Nitrenes- 1,2-shift rearrangement
Nitrenes- addition to alkenes
Nitrenes- addition to C-H bonds (insertion)
Nitrenes- Hoffman rearrangement to form amine from amide
Nitrenes- Preparation by oxidation of R-NH2
Nitrenes- Preparation by reduction of R-NO2
Nitrenes- Preparation from alpha-elimination
Nitrenes- Preparation from azides (also organohalides)
Nitrenes- rearrangement concerted with formation
Reactive intermediates- Bis cycloheptene with with OTs leaving group
Rearrangements - Arndt Eistert
Rearrangements - Bayer-Villiger
Rearrangements - Bayer-Villiger (effects of stereochemistry)
Rearrangements - Beckmann
Rearrangements - Benzylic acid
Rearrangements - Dienone-phenol
Rearrangements - Favorskii Rearrangement (Carbanion)
Rearrangements - Stevens rearrangement
Rearrangements- Addition of DBr to bicyclic alkene
Rearrangements- amines from acyl chlorides- Curtius rearrangement
Rearrangements- Beckmann fragmentation (of oxime)
Rearrangements- Benzidine rearrangement- (hydrazobenzine to benzidine)
Rearrangements- Bicyclic epoxide to aldehyde
Rearrangements- Eschenmoser Fragmentation
Rearrangements- Methyl shifts in turpenes- Nametkin rearrangement
Rearrangements- Multiple Wagner-Meerwein shift
Rearrangements- Neber rearrangement (Beckmann in the presence of base to form amine)
Rearrangements- Payne Rearrangement hydroxy group alpha to epoxide
Rearrangements- Pinacol
Rearrangements- Pinacol with epoxide
Rearrangements- Ramberg Backland Rearrangement
Rearrangements- Ring expansion
Rearrangements- Schmidt reaction (HN3, ketone and acid)
Rearrangements- Semipinacol Rearrangement
Rearrangements- Shapiro reaction
Rearrangements- t-butyl group next to electrophilic centre
Rearrangements- Wagner-Meerwein
Rearrangements- Wittig Rearrangement- ether to alcohol
Singlet Oxygen- Diels Alder type reaction with diene
Singlet Oxygen- Ene reaction
Singlet Oxygen- Preparation from dioxygen bridged napthalene
Singlet Oxygen- Preparation from photosensitiser
Singlet Oxygen- [2,2] cylcoaddition to alkene