Abstract 6, 7-Dimethoxy-2-naphthylethylamine, prepared by the diborane reduction of 6, 7- dimethoxy-2-naphtlialeneacetamide, underwent a Pictet-Spengler cyclization to form 8, 9- dimethoxy-1, 2, 3, 4-tetrahydrobenz [h] isoquinoline. This compound is identical with that obtained by reduction of the corresponding dihydrobenzisoquinoline prepared from formamide cyclization. 6, 7-Dialkoxy-2-naphthaleneacetic acids, the key intermediates for ...
![Naphtho[2,3-d]-1,3-dioxole Structure](https://image.chemsrc.com/caspic/192/269-43-2.png)
![1-benzo[f][1,3]benzodioxol-6-ylethanone Structure](https://image.chemsrc.com/caspic/374/37707-77-0.png)