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|Title: ||Synthesis of 1,3-Dienes via a sequential Suzuki-Miyaura coupling/Palladium-mediated Allene isomerization sequence.|
|Authors: ||Al-Jawaheri, Yassir|
Kimber, Marc C.
|Issue Date: ||2016|
|Publisher: ||© American Chemical Society|
|Citation: ||AL-JAWAHERI, Y. and KIMBER, M.C., 2016. Synthesis of 1,3-Dienes via a sequential Suzuki-Miyaura coupling/Palladium-mediated Allene isomerization sequence. Organic Letters, 18(14), pp 3502–3505.|
|Abstract: ||We report a facile method for the synthesis of 1,3-dienes by a sequential process consisting of a palladium catalyzed, base-free, Suzuki-Miyaura coupling/isomerization sequence. This sequence couples boronic acids with propargyl alcohols, generating the requisite allene in situ, followed by conversion of the unactivated allene to its 1,3-diene via a hydro-palladation/dehydro-palladation process. This process is general for a range of boronic acids, including boronic acids with electron donating and withdrawing groups, as well as heteroarylboronic acids. Key to this process is the boric acid by-product of the base-free Suzuki–Miyauru coupling, which generates the required palladium–hydrido complex [H-PdII-OB(OH)2] required for the isomerization.|
|Description: ||This paper is in closed access until June 29th 2017.|
|Version: ||Accepted for publication|
|Publisher Link: ||http://dx.doi.org/10.1021/acs.orglett.6b01841|
|Appears in Collections:||Closed Access (Chemistry)|
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