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        Synthesis  2006(17): 2865-2872  
DOI: 10.1055/s-2006-942536
   DOI: 10.1055/s-2006-942536
PAPER
© Georg Thieme Verlag Stuttgart · New YorkSynthesis of 4-Alkyl- and 4-(ω-Chloroalkyl)-3-hydroxy-5-alkylidenebutenolides Based On Cyclizations of 4-Alkyl- and 4-(ω-Chloroalkyl)-1,3-bis(trimethylsilyloxy)buta-1,3-dienes with Oxalyl Chloride
Weitere Informationen
            
               
                  
                        
                              Received
                              10 March 2006 
                      
Publikationsdatum:
02. August 2006 (online)
            
         
      
   Publikationsverlauf
Publikationsdatum:
02. August 2006 (online)

Abstract
4-Alkyl- and 4-(ω-chloroalkyl)-1,3-bis(trimethylsilyloxy)buta-1,3-dienes were prepared from ethyl acetoacetate in three steps. Their cyclization with oxalyl chloride allowed an efficient synthesis of 4-alkyl- and 4-(ω-chloroalkyl)-5-alkylidenebutenolides.
Key words
butenolides - cyclizations - O-heterocycles - silyl enol ethers
- 1 For a review of 1,3-bis-silyl enol ethers, see:  
            Langer P. Synthesis 2002, 441
- 2a 
             
            Chan T.-H.Brownbridge P. J. Am. Chem. Soc. 1980, 102: 3534Reference Ris Wihthout Link
- 2b 
             
            Simoneau B.Brassard P. Tetrahedron 1986, 14: 3767Reference Ris Wihthout Link
- 2c 
             
            Molander GA.Cameron KO. J. Am. Chem. Soc. 1993, 115: 830Reference Ris Wihthout Link
- 3a 
             
            Langer P.Stoll M. Angew. Chem. Int. Ed. 1999, 38: 1803 ; Angew. Chem. 1999, 111, 1919
- 3b 
             
            Langer P.Schneider T.Stoll M. Chem. Eur. J. 2000, 6: 3204
- 3c 
             
            Langer P.Eckardt T.Schneider T.Göbel C.Herbst-Irmer R. J. Org. Chem. 2001, 66: 2222
- 3d 
             
            Langer P.Eckardt T.Stoll M.Karimé I.Müller P.Saleh NNR. Eur. J. Org. Chem. 2001, 3657
- 3e 
             
            Ahmed Z.Langer P. J. Org. Chem. 2004, 69: 3753
- 3f 
             
            Bose G.Langer P. Synlett 2005, 1021
- 3g 
             
            Ahmed Z.Langer P. Tetrahedron 2005, 61: 2055
- 4 
             
            Desage-El Murr M.Nowaczyk S.Le Gall T.Mioskowski C.Amekraz B.Moulin C. Angew. Chem. Int. Ed. 2003, 42: 1289 ; Angew. Chem. 2003, 115, 1327
- 5a 
             
            Holker JS.O’Brien E.Moore RN.Vederas JC. J. Chem. Soc., Chem. Commun. 1983, 192
- 5b 
             
            Holker JS.Kaneda M.Ramer SE.Vederas JC. J. Chem. Soc., Chem. Commun. 1987, 1099
- 6 
             
            Langer P.Bellur E. J. Org. Chem. 2003, 68: 9742
- 7a 
             
            Bose G.Nguyen VTH.Ullah E.Lahiri S.Görls H.Langer P. J. Org. Chem. 2004, 69: 9128
- 7b 
             
            Bellur E.Görls H.Langer P. Eur. J. Org. Chem. 2005, 2074
- 7c 
             
            Nguyen VTH.Langer P. Tetrahedron Lett. 2005, 46: 815
- 7d 
             
            Nguyen VTH.Bellur E.Appel B.Langer P. Synthesis 2006, 1103
- 8a 
             
            Clemo NG.Gedge DR.Pattenden G. J. Chem. Soc., Perkin Trans. 1 1981, 1448
- 8b 
             
            Gill GB.James GD.Gates KV.Pattenden G. J. Chem. Soc., Perkin Trans. 1 1993, 2567
- 9 
             
            Huckin SN.Weiler L. Can. J. Chem. 1974, 52: 1343
- 10 
             
            Katritzky AR.Wang Z.Wang M.Wilkerson CR.Hall CD.Akhmedov NG. J. Org. Chem. 2004, 69: 6617
- 11 
             
            Sekiyama Y.Fujimoto Y.Hasumi K.Endo A. J. Org. Chem. 2001, 66: 5649
- 12a 
             
            Sato T.Itoh T.Fujisawa T. Chem. Lett. 1982, 1559
- 12b 
             
            Liang JC.Cross JO. Mol. Cryst. Liq. Cryst. 1986, 132: 123
- 13a 
             
            Matsuo K.Kitaguchi I.Takata Y.Tanaka K. Chem. Pharm. Bull. 1980, 28: 2494
- 13b 
             
            Doleschall G.Seres P.Kovacs A. J. Chem. Res., Miniprint 1991, 2: 324
- 14 
             
            Augelli-Szafran CE.Blankley CJ.Roth BD.Trivedi BK.Bousley RF. J. Med. Chem. 1993, 36: 2943
 
    