1-Indanone → 5H-Indeno(1,2-c)pyridazin-3-one, 2,3-dihydro-

Participants

Reaction Steps

By a method similar to that described in Preparation 3, 1-indanone was treated with glyoxylic acid monohydrate and hydrazine hydrate to give [5H]-indeno[1,2-c]pyridazin-3[2H]-one, m.p. 295° (from glacial acetic acid); ν(Nujol mull), 3300-2000, 1660, 1618, 1565 and 738 cm-1 ; δ-(DMSO-d6) 3.95 (2H,s,5-H2), 6.92 (1H,m,4-H), 7.46 (3H,m,6,7,8-H), 7.73 (1H,m,9-H).

Provenance & Evidence