Triazolopyrazine Series

Repeat of Synthesis of 2-Chloro-6-hydrazinylpyrazine (AEW 85-1), see also Synthesis of 2-Chloro-6-hydrazinylpyrazine (AEW 85-2)

Started 8.30 am 

2,6-Dichloropyrazine (4 g, 27.0 mmol) was vigorously stirred in ethanol (40 mL) and hydrazine hydrate (1.32 mL, 1.36 g, 27.0 mmol) was added. The resulting mixture was heated at 80 ˚C for 12 h. Reaction incomplete. Stirred overnight and still SM. Stirred over the weekend..with a TLC check...couldn't see SM. Solvent evaporated - still SM by NMR. Resubmitted to the reaction conditions.

Data:

¹H NMR (200 MHz, CDCl₃): incomplete

¹H NMR (300 MHz, CDCl₃):

Hazard and Risk Assessment:

See Synthesis of 2-Chloro-6-hydrazinylpyrazine (AEW 85-1)

InChi Strings:

InChI=1S/C4H2Cl2N2/c5-3-1-7-2-4(6)8-3/h1-2H

to

InChI=1S/C4H5ClN4/c5-3-1-7-2-4(8-3)9-6/h1-2H,6H2,(H,8,9)