Pyridine series

Triphenylphosphine dibromide

7,7-Dichlorobicyclo[3.2.0]hept

cyclopenta-1,3-diene

Tropolone

Methyl 2-bromobenzoate

3-(trans-3-Ethoxy-3-oxo-1-prop

4-Chloro-butyraldehyde

(3-Nitro-4,5-dihydro-pyrazol-1

2-HYDROXYHEXADECANOIC ACID

3-bromophthalic acid

2-Oxo-succinic acid 4-methyl e

7-DIMETHOXYMETHYL-1,2,3,4-TETR