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synthesis reactions procedure types aromaticity nmr regioselectivity chiral auxiliary experiment asymmetric synthesis cycloaddition reaction configuration electrophilic aromatic substitution reaction reformatsky reaction acetanilide preparation sawhorse newmann stereochemistry anti and syn eliminations peterson olefination ipso substitution organosilanes 123-triazine reducing agent 124-triazine mitsunobu reaction wittig reaction 135-triazine nomenclature phosphites phosphines organophosphorus anomalous x-ray scattering cotton effect ord cd optical rotation relative absolute pyrazine diazine theipine oxepine chemoselectivity organomanganese reagents sextet theory hydrazines dipolar cycloaddition reaction sydnones mesoionic heterocycles octant rule alpha axial haloketone sector rule lactam 3h-azepine 1h-azepine 4h-azepine azacycloheptatriene electron deficient dienes inverse electron demand diels-alder reaction isomers tetrazine heterocycle julia olefination sulfur ylides thioethers thiols cyanuric chloride cyanuric acid inverse demand diels-alder reaction heterocycles six membered allenes oxidizing agent alkene ozone ozonolysis unconjugated diene set birch reduction asymmetric dihydroxylation asymmetric epoxidation stereospecific stereoselective receptor theories drug administration receptors enzymes adme structure free ware molecule chemsketch diastereotopic ligands & faces homotopic enantiotopic prochirality d-l & erythro-threo m-p convention r-s nomenclature flying wedge representation solvent free grind stone technique heterocyclic compound pyrimidine diazines protonolysis cyanidation isomerization carbonylation synthesis of aldehyde oxidation to alcohols hydroboration reaction organoboranes aromatic character pyridine heterocyle crystal field splitting tetrahedral octahedral cfse fukuyama coupling negishi coupling barbier reaction cyclopropanation simmon-smith reaction organozinc chemoselective reagent cecl3 nabh4 luche reduction retro dipolar cycloaddition dipolar cycloaddition chiral center cip rule d-l convention threo-erythro drug medicine ld50 ic50 therapeutic index pharmacophore nomenclature of drugs organolithium reagents organomagnesium compounds grignard reagent organocuprates gilman reagent p-bromoaniline hydrolysis p-nitroacetanilide biochemical mechanism coenzymes tpp plp coa lipoic acid vit k biotin nad fadh2 vit b12 dash-wedge fischer sigma bonding pi bonding aom color magnetic properties spinels lattice energy 2-naphthol bromo napthol oxone solvent free pechmann condensation resorcinol coumarins benzimidazole condensation reaction organozinc reagent simmon smith reaction coordination compounds ligands iupac nomenclature stereoisomerism coordination numbers zirconium comple carbonylation reaction palladium complex wacker oxidation cobalt complex hydroformylation reaction cft lft mot formic acid chemical shift reagents factors affecting chemical shift ir mass format phenylindole acetophenone phenylhydrazine p-nitrobenzoic acid p-aminobenzoic acid ethyl ester of p-aminobenzoic acid 123-triazole admet docking studies pass analysis semi micro qualitative analysis alkynes seven membered heterocycles valence tautomers benzene-oxide benzene-sulfide covid-19 questions answers 1h chemical shift principle instrumentation coupling constant karplus curve first order second order kolbes electrolysis gomberg-bachmann reaction meerwein arylation nbs peroxides hunsdiecker reaction nucleic acid nucleoside nucleotide dna rna olig onucleotide synthesis phosphodiester phosphotriester phosphoramidite approach organic chemistry functional group analysis binary mixture coordination complexes enantiomeric excess asymmetric induction asymmetric aldol reaction binalh chiral ligands crams rule prelogs rule reetz model diastereoselectivity free radicals allylic halogenation benzylic halogenation p-bromoacetanilide