2-aminobenzoyl azide

1-nitro-3-phenylguanidine

1,3-benzothiazole-2-sulfonic acid

1-(chloromethyl)-N,N-dimethyl-1,4-dihydropyridin-4- iminium chloride

2-(1H-indol-3-ylmethyl)benzoic acid

6-ethoxy-1,3-benzothiazole-2-sulfonic acid

1-pentylpyridinium azide

tert-butyl 8-oxo-2,4,6,7,11- pentaazatricyclo[7.4.0.0{3,7}]trideca-1(9),3,5- triene-11-carboxylate

1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one

2-Phenyl-Iimidazol-1-yl-difluoromethyl-diphenylphosphine

Trityl triflate