Oxyiodination process for manufacture of 2,6-diiodonaphthalene

Details Oxyiodination process for manufacture of 2,6-diiodonaphthalene Oxyiodination process for manufacture of 2,6-diiodonaphthalene

C - Chemistry, Metallurgy

07

C

C07C 25/22 (2006.01) C07C 17/156 (2006.01) C07C 17/158 (2006.01)

Patent

CA 2086744

2086744 9207811 PCTABS00013 Disclosed is a process for preparation of a stream which is both selectively high in 2,6-diiodonaphthalene and also contains substantial quantities of diiodonaphthalene. First, naphthalene is oxyiodinated in the presence of a zeolite catalyst to produce a stream which is selectively high in 2-monoiodonaphthalene and the 2-monoiodonaphthalene is separated from the stream to produce a stream which is both selectively high in 2-monoiodonaphthalene and contains substantial quantities of 2-monoiodonaphthalene. Second, this stream is then oxyiodinated in the presence of a zeolite catalyst to produce a stream which is selectively high in 2,6-diiodonaphthalene and then 2,6-diiodonaphthalene is separated from the stream to produce the stream which is both selectively high in 2,6-diiodonaphthalene and contains substantial quantities of 2,6-diiodonaphthalene.

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