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Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/orie1876/public_html/ORGMECH/category.php on line 176 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