6345-69-3Relevant articles and documents
Thermal cyclization of 3-azido-2-phenyl-indan-1-one to 5H-indeno[1,2-b]indol-10-one [1]
Stadlbauer, Wolfgang,Fischer, Michaela
, p. 131 - 135 (2007/10/03)
3-Azido-2-phenylindan-1-one (4), which was obtained from 3-chloro-2-phenylindan-1-one (3), cyclizes on thermolysis to 5H-indeno[1,2-b]indol-10-one (5). Reaction of 3-azido-2-phenylindan-1-one (4) with triphenylphosphane gives 2-phenyl-3-(triphenylphosphoranylideneamino)-indan-1-one (6), which can be hydrolyzed to 3-amino-2-phenylindan-1-one (7). Attempts to perform a similar cyclization sequence with 3-chloro-2-pyridylindan-1-ones failed.