Tungsten Hexachloride (WCl₆), A Highly Efficient and Chemoselective Catalyst for Acetalization of Carbonyl Compounds

References

• Greene , T. W. and Wuts , P. G. M. 1991 . Protective Groups in Organic Synthesis, , 2nd ed. , 175 – 198 . New York : Wiley .
   Google Scholar
• Meskens , A. J. 1981 . Synthesis , : 501 For a review see
   Web of Science ®Google Scholar
• Tsunoda , T. , Suzuki , M. and Noyori , R. 1980 . Tetrahedron Lett. , 21 : 1357 For more recent leading references see
   Web of Science ®Google Scholar
• Shibagaki , M. , Takahashi , K. , Kuno , H. and Matsushita , H. 1990 . Bull. Chem. Soc. Jpn. , 63 : 1258
   Web of Science ®Google Scholar
• Ott , J. , Ramos , Tombo G.M. , Schmid , B. , Venanzi , L. M. , Wang , G. and Ward , T. R. 1989 . Tetrahedron Lett. , 30 : 6151
   Web of Science ®Google Scholar
• Otera , J. , Mizutani , T. and Nazaki , H. 1989 . Organometallics , 8 : 2063
   Web of Science ®Google Scholar
• Ma , S. and Venanzi , L. M. 1993 . Synlett , : 751
   Google Scholar
• Wang , W. B. , Shi , L. L. and Huang , Y. Z. 1990 . Tetrahedron Lett. , 45 : 3315
   Google Scholar
• Coda , F. and Venanzi , L. M. 1993 . Helv. Chim. Acta , 73 : 690
   Google Scholar
• Fukuzawa , S. , Tsuchimoto , T. , Hotaka , T. and Hiyama , T. 1995 . Synlett , : 1077 and references cited therein
   Google Scholar
• Tateiwa , J. , Horiuchi , H. and Uemura , S. 1995 . J. Org. Chem. , 60 : 4039 and references cited therein
   Web of Science ®Google Scholar
• Luche , J. L. and Gemal , A. L. 1978 . J. Chem. Soc., Chem. Commun. , : 976
   Google Scholar
• De Graw , J. I. , Goodman , L. and Baker , B. R. 1961 . J. Org. Chem. , 26 : 1156
   Web of Science ®Google Scholar
• Taylor , E. C. and Chiang , C. S. 1977 . Synthesis , : 467
   Google Scholar
• Thurkauf , A. , Jacobson , A. E. and Rice , K. C. 1988 . Synthesis , : 233
   Google Scholar
• Ishihara , K. , Karumi , Y. , Kubota , M. and Yamamoto , H. 1996 . Synlett , : 839
   Web of Science ®Google Scholar
• Fife , T. H. and Jao , L. K. 1965 . J. Org. Chem. , 39 : 1492
   Web of Science ®Google Scholar
• Bornstein , J. , Bedell , S. F. , Drummond , P. E. and Kosloski , C. L. 1956 . J. Am. Chem. Soc. , 78 : 83
   Web of Science ®Google Scholar
• Patwardhan , S. A. and Dev , S. 1974 . Synthesis , : 348
   Google Scholar
• Firouzabadi , H. and Shiriny , F. 1996 . Tetrahedron , 52 : 14929
   Web of Science ®Google Scholar
• Firouzabadi , H. , Iranpoor , N. and Karimi , B. 1998 . Synlett , : 739
   Web of Science ®Google Scholar
• Toda , F. 1993 . Synlett , : 303 For a review on the solid state reactions see:
   Web of Science ®Google Scholar
• 1981 . Dictionary of Organic Compounds, , 5th ed , New York : Chapman & Hall .
   Google Scholar
• 1923 . Beilstein's Handbuch der Organichem Chemie , Berlin : Springer Verlag .
   Google Scholar
• Buys , H. R. and Eliel , E. L. 1970 . Tetrahedron Lett. , : 2779
   Google Scholar
• Salmi , E. J. and Kyrki , K. 1946 . Suomen Kemistilehti , 19B : 97
   Google Scholar
• 1947 . Chem. Abst. , 47 : 5480 – 5481 .
   Google Scholar
• Gassparrini , F. , Giovannoli , M. and Misiti , D. 1984 . Tetrahedron , 40 : 1491
   Web of Science ®Google Scholar
• Dann , A. E. , Davis , J. B. and Nagler , M. J. 1979 . J. Chem. Soc., Parkin Trans 1 , : 158
   Google Scholar
• 3c: 1H NMR (CDCl3, 250 MHz) σ 1.18–1.23 (m, 1H), 1.94–2.09 (m, 1H), 3.68–3.78 (m, 2H), 4.02–4.09 (m, 2H), 5.02 (s, 1H), 6.10–6.18 (dd, J=15 Hz, 5 Hz, 1H), 6.69–6 75 (d, J=15 Hz, 1H), 7.17–7.63 (m, 511); 3h: σ 1.43–1.56 (m, 2H), 1.68–1.77 (m, 6H), 2.38–2.43 (m, 2H), 2.50–2.62 (m, 11–1), 3.87–3.96v (m, 4H), 7.18–7.32 (m, 5H); They also converted to their corresponding carbonyl compounds upon aqueous acid hydrolysis and gave satisfactory 13C NMR, IR, and Ms spectra
   Google Scholar