反应详情

The present inventors have found that 4-(pyridin-2-yl)benzaldehyde can be produced economically by reacting a salt of 2-(4-bromomethylphenyl)pyridine, 2-(4-dibromomethylphenyl)pyridine or salt thereof, all of which being novel compounds, with hexamethylenetetramine and water, and further that a salt of 2-(4-bromomethylphenyl)pyridine, 2-(4-dibromomethylphenyl)pyridine and a salt thereof can be obtained by reacting a salt of 2-(4-tolyl)pyridine with a brominating agent. In addition, they have found that N-(tert-butoxycarbonyl)-N′-[4-(pyridin-2-yl)phenylmethylidene]hydrazine can be produced more economically and easily by reacting 4-(pyridin-2-yl)benzaldehyde hydrazone with di-tert-butyl dicarbonate, and that 4-(pyridin-2-yl)benzaldehyde hydrazone can be obtained from 4-(pyridin-2-yl)benzaldehyde.

1. customcan be produced more economically