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Synlett 2009(20): 3355-3359
DOI: 10.1055/s-0029-1218373
DOI: 10.1055/s-0029-1218373
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Ruthenium-Catalyzed Regioselective Reactions of Nitriles and 1,3-Dicarbonyl Compounds with Terminal Alkynes [¹]
Further Information
Received
23 September 2009
Publication Date:
18 November 2009 (online)
Publication History
Publication Date:
18 November 2009 (online)
Abstract
RuH2(PPh3)4-catalyzed reaction of nitriles with terminal alkynes proceeds highly efficiently under neutral conditions to give the corresponding Michael adducts. Furthermore, 1,3-dicarbonyl compounds react with terminal alkynes at the α-position to afford the exo-methylene compounds with high regioselectivity under neutral conditions. The regioselectivity depends upon the change of substrates. The precise mechanism is presented.
Key words
ruthenium catalyst - regioselective addition - nitriles - 1,3-dicarbonyl compounds - alkynes
Presented at the 40th Symposium on Organometallic Chemistry, 1995, Osaka, Japan.
-
2a
Murahashi S.-I. In Handbook of C-H Transformation Vol. 2:Dyker G. Wiley-VCH; Weinheim: 2005. p.319 -
2b
Murahashi S.-I.Takaya H. Acc. Chem. Res. 2000, 33: 225 -
2c
Murahashi S.-I.Naota T. Bull. Chem. Soc. Jpn. 1996, 69: 1805 -
3a
Naota T.Taki T.Mizuno M.Murahasi S.-I. J. Am. Chem. Soc. 1989, 111: 5954 -
3b
Murahashi S.-I.Naota T.Taki H.Mizuno M.Takaya H.Komiya S.Mizuho Y.Oyasato N.Hiraoka M.Hirano H.Fukuoka A.
J. Am. Chem. Soc. 1995, 117: 12436 -
3c
Takaya H.Murahashi S.-I. Synlett 2001, 991 -
3d
Takaya H.Naota T.Murahashi S.-I. J. Am. Chem. Soc. 1998, 120: 4244 -
3e
Takaya H.Yoshida K.Isozaki K.Terai H.Murahshi S.-I. Angew. Chem. Int. Ed. 2003, 42: 3302 - 4
Takaya H.Kojima S.Murahashi S.-I. Org. Lett. 2001, 3: 421 - 5
Guo Y.Zhao X.Zhang D.Murahashi S.-I. Angew. Chem. Int. Ed. 2009, 48: 2047 - 6
Takaya H.Ito M.Murahashi S.-I. J. Am. Chem. Soc. 2009, 131: 10824 -
7a
Nakamura M.Endo K.Nakamura E. J. Am. Chem. Soc. 2003, 125: 13002 -
7b
Endo T.Hatakeyama T.Nakamura M.Nakamura E. J. Am. Chem. Soc. 2007, 129: 5264 -
7c
Tsuji H.Yamagata K.Itoh Y.Endo K.Nakamura M.Nakamura E. Angew. Chem. Int. Ed. 2007, 46: 8060 -
7d
Kaneda K.Motokura K.Nakagiri N.Mizugaki T.Jitsukawa K. Green Chem. 2008, 10: 1231 -
8a
Kennedy-Smith JJ.Staben ST.Toste FD. J. Am. Chem. Soc. 2004, 126: 4626 -
8b
Corley BK.Toste FD. J. Am. Chem. Soc. 2005, 127: 17168 -
9a
Kuninobu T.Kanata A.Takai K. Org. Lett. 2005, 7: 4823 -
9b
Kuninobu Y.Kawata A.Takai K. Org. Lett. 2008, 10: 1219 -
9c
Kuninobu Y.Kawata A.Nishi M.Salprima YS.Chen M.Takai K. Chem. Asian J. 2009, 4: 1424 -
9d
Zhao W.-G.Hua R. Tetrahedron 2007, 63: 11803 - 10
Guo Q.Zheng BF.Li J.-H. Org. Lett. 2005, 7: 2185 -
11a
Naota T.Tannna A.Murahashi S.-I. J. Am. Chem. Soc. 2000, 122: 2960 -
11b
Naota T.Tannna A.Kamuro S.Murahashi S.-I. J. Am. Chem. Soc. 2002, 124: 6842 -
11c
Naota T.Tannna S.Kamuro S.Hieda M.Ogata K.Murahashi S.-I.Takaya H. Chem. Eur. J. 2008, 14: 2482
References and Notes
Presented at the 40th Symposium on Organometallic Chemistry, 1995, Osaka, Japan.