Selenium → 7-Methoxy-benzo[4,5]cyclohepta[1,2-b]pyridin-5-one

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of 2.3 g (9.6 mmol) of the product from Example 23 step 4, 1.85 g (16.6 mmol) of selenium dioxyde and 5 ml of pyridine is stirred at 120° C. for 6 hr. The whole is poured into excess petroleum ether and the solution is evaporated giving 0.55 g (24%) of enough pure title product as to prosecute with the synthesis.

Herkunft & Nachweise