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April 1, 1990Bulletin of the Chemical Society of Japan

Activated Nitriles in Heterocyclic Synthesis. Novel Synthesis of 5-Imino-5 H -[1]benzopyrano[3,4- c ]pyridine-4(3 H )-thiones and Their Oxo Analogues

Galal H. Elgemeie Ahmed H. Elghandour

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Abstract

Various benzopyrano[3,4-c]pyridine-4(3H)-thione derivatives and their oxo analogues were prepared by condensation of cyanothioacetamide or cyanoacetamide and salicylaldehyde with ketones or activated nitriles in the presence of ammonium acetate.

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Elgemeie et al. (1990) studied this question.

synapsesocial.com/papers/6ac73fd4360b0cc14c160ca0 https://doi.org/10.1246/bcsj.63.1230

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