2-Methyl-3-(4-pyridyl)-3,3A,4,5-tetrahydro-2H-benz(G)indazole → 2-Methyl-3-pyridin-4-yl-4,5-dihydrobenzo[g]indazole

Participants

Reaction Steps

Following the above procedure but using an equivalent amount of 9-methoxy-3-(4-pyridyl)-2,3,3a,4,5,6-hexahydrobenzo[6,7]cyclohepta[1,2-c] pyrazole or 2-methyl-3-(4-pyridyl)-3,3a,4,5-tetrahydro-2H-naphtho[1,2-c] pyrazole in place of the 3-(4-pyridyl)-2,3,3a,4,5,6-hexahydrobenzo[6,7]cyclohepta[ 1,2-c]pyrazole used therein, there is obtained 9-methoxy-3-(4-pyridyl)-2,4,5,6-tetrahydrobenzo[ 6,7]cyclohepta[1,2-c]pyrazole (m.p. 200°-201°C) or 2-methyl-3-(4-pyridyl)-4,5-dihydro-2H-naphtho[1,2-c]pyrazole (m.p. 124°-217°C).

Provenance & Evidence