Selective meso-monobromination of 5,15-diarylporphyrins via organopalladium porphyrins
Kato, Aiko, Hartnell, Regan D., Yamashita, Masahiro, Miyasaka, Hiroshi, Sugiura, Ken-ichi , & Arnold, Dennis P. (2004) Selective meso-monobromination of 5,15-diarylporphyrins via organopalladium porphyrins. Journal of Porphyrins and Phthalocyanines, 8(10), pp. 1222-1227.
The selective meso-monobromination of 5,15-diarylporphyrins is difficult to achieve and extensive chromatography is required to obtain pure products. A sequence of (i) dibromination, (ii) selective monoinsertion of [Pd(dppe)] [dppe = 1,2-bis(diphenylphosphino)ethane] and (iii) hydrodepalladation using methanolic base affords pure monobromoporphyrins in typically ≥60% overall yield without isolation of the organopalladium porphyrin. Monobromo derivatives of even highly lipophilic 5,15-diarylporphyrins are thus readily available without tedious, expensive and environmentally undesirable chromatography.
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|Item Type:||Journal Article|
|Keywords:||porphyrins, organometallic, palladium, bromination|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > OTHER CHEMICAL SCIENCES (039900) > Organometallic Chemistry (039904)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2004 Society of Porphyrins and Phthalocyanines|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||12 Apr 2005|
|Last Modified:||29 Feb 2012 23:30|
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