Practical catalyst for cyclic metathesis. Synthesis of functional and/or enantiopure cycloalkenes.
…, J Feldman, JC Calabrese
Index: Nugent, William A.; Feldman, Jerald; Calabrese, Joseph C. Journal of the American Chemical Society, 1995 , vol. 117, # 35 p. 8992 - 8998
Full Text: HTML
Citation Number: 106
Abstract
Abstract: The oxo-tungsten complex trans-WOCl2 (OAr) 2 (AI= 2, 6-dibromophenyl) is prepared by reaction of WOCb with 2 equiv of 2, 6-dibromophenol. A variety of nonconjugated dienes are cleanly cyclized to the corresponding cycloalkenes using 2 mol% of this catalyst in combination with 4 mol% of tetraethyllead. All three components of the catalyst system are commercially available. The catalytic reactions are typically complete ...
Related Articles:
[Hayashi; Iwamura; Uozumi; Matsumoto; Ozawa Synthesis, 1994 , vol. 1, # 5 p. 526 - 532]
[Hayashi, Tamio; Iwamura, Hiroshi; Naito, Masaki; Matsumoto, Yonetatsu; Uozumi, Yasuhiro; Miki, Misao; Yanagi, Kazunori Journal of the American Chemical Society, 1994 , vol. 116, # 2 p. 775 - 776]
[Singaram, Bakthan; Rangaishenvi, Milind V.; Brown, Herbert C.; Goralski, Christian G.; Hasha, Dennis L. Journal of Organic Chemistry, 1991 , vol. 56, # 4 p. 1543 - 1549]
[Kawatsura, Motoi; Uozumi, Yasuhiro; Ogasawara, Masamichi; Hayashi, Tamio Tetrahedron, 2000 , vol. 56, # 15 p. 2247 - 2257]
Optisch aktives β??Citronellol aus (+)??oder (−)??Pinan
[Rienaecker,R.; Ohloff,G. Angewandte Chemie, 1961 , vol. 73, p. 240]