A novel transformation of 6,7-dimethoxy-
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S. Natarajan; B.R. Pai; R. Rajaraman; C.S. Swaminathan; K. Nagarajan; V. Sudarsa
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Article
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1975
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Elsevier Science
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French
⚖ 203 KB
The eyntheeia of tetrehydroprotoberberine~' by the reaction of l-benzyl-1,2,3,4-tetrahydroisoquinolinee with formaldehyde by a Pictet-Spengler type reaction' is well documented and provides few,surprises. However, we wish to report on the unueual bchaviour of l-(2-bromo-4,5-methylenedioxy-a-methyl)