Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 16, No. 1, 1981, pp.9-16
Published online, 1st January, 1970
DOI: 10.3987/R-1981-01-0009
Methylation of Pyridazines. The Crystal and Molecular Structure of 4,5-Diamino-1-methyl-3-methylthiopyridazinium Iodide

Bradford J. Graves, Derek J. Hodgson,* Sinh-Fong Chen, and Raymond P. Panzica

*Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, Chapel Hill, NC 27599-3290


The crystal and molecular structure of 4,5-diamino-1-methyl-3-methylthiopyridazinium iodide (3) has been determined. This X-ray crystallographic study corroborates the suggested course of methylation of substituted pyridazines and established the direction of ring closure of mucochloric acid with methylhydrazine.