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  • 學位論文

直接利用2-丁烯-1,4-二醇使鄰-苯二胺類化合物進行鈀催化前後兩次的烯丙基化反應

Palladium-Catalyzed Tandem Allylation of o-Phenylenediamines Using 2-Butene-1,4-diol Directly

指導教授 : 楊世群
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摘要


在鈦試劑的存在下,可以促進鈀錯合物直接活化2-丁烯-1,4-二醇結構中的碳-氧鍵斷裂。在鈀化合物的催化下,會使鄰-苯二胺類化合物與2-丁烯-1,4-二醇進行前後兩次烯丙基化反應,而得到1,2,3,4-四氫-2-乙烯基口奎口咢口林衍生物(7)。此外,在醋酸鈀與具有對掌性的配位基(R)-BINAP的存在下,將鄰-苯二胺與2-丁烯-1,4-二醇反應,可以得到具光學活性的產物 1,2,3,4-四氫-2-乙烯基口奎口咢口林(7a),產率58﹪,ee值19﹪。

並列摘要


The direct activation of C-O bonds in 2-butene-1,4-diol by palladium complexes has been accelerated by carrying out the reactions in the presence of a titanium reagent. Palladium-catalyzed tandem allylation of o-phenylenediamines with 2-butene-1,4-diol leads to 1,2,3,4,-tetrahydro-2-vinylquinoxalines(7).The cyclization of o-phenylenediamine with 2-butene-1,4-diol catalyzed by palladium acetate coordinated with (R)-BINAP as the chiral ligand leads to optically active 1,2,3,4,-tetrahydro-2-vinylquinoxaline (7a) with 19﹪ee and in 58﹪yield.

參考文獻


1. Jain, P.; Garraffo, H. M.; Spande, T. F.; Yeh, H. J. C.; Daly, J. W.
J . Nat.Prod.1995, 58, 100.
2. Walsh, C. Tetrahedron 1982, 38, 871.
3. Prashad, M. J. Med. Chem. 1993, 36, 631.
4. Gilson, M. S.; Bradashaw, W. Angew. Chem., Int. Ed. Engl. 1968, 7, 919.

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