Author(s)

Hamdi M Hassaneen, Huwaida M. E Hassaneen, Yasmin Sh Mohammed

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Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt.

The reaction of 1-methylisoquinoline 1 with hy-drazonoyl halides 2 in ethanol in the presence of chitosan under microwave irradiation affords triazoloisoquinoline 4. Product 4 reacts with dimethylformamide-dimethylacetal to give ena- minones 7 which react with hydrazonoyl halides to give pyrazolyl triazoloisoquinoline 13. Also, 1-methylisoquinoline 1 reacts with arylisothio-cyanate to give thioanilide 15 which reacts with hydrazonoyl halides to give the corresponding thiadiazolyl isoquinoline derivatives 20, 24.

[1, 2, 4]Triazolo[3, 4-a]isoquinolines; Enaminones; Hydrazonoyl Halides; Cycloaddition Reactions; Chitosan; Thioanilides; [1, 3, 4]Thiadiazolylisoquinoline Derivatives

Hassaneen, H. , Hassaneen, H. and Mohammed, Y. (2011) Reactivity of 1-methylisoquinoline synthesis of pyrazolyl triazoloisoquinoline and thia-diazolyl isoquinoline derivatives. Natural Science, 3, 651-660. doi: 10.4236/ns.2011.38089.