Use of group 4 bis (sulfonamido) complexes in the intramolecular hydroamination of alkynes and allenes
L Ackermann, RG Bergman, RN Loy
Index: Ackermann, Lutz; Bergman, Robert G.; Loy, Rebecca N. Journal of the American Chemical Society, 2003 , vol. 125, # 39 p. 11956 - 11963
Full Text: HTML
Citation Number: 191
Abstract
Titanium tetrakis (amido) complexes catalyze the intramolecular hydroamination of alkynes and allenes more efficiently than Cp-based species. We report here that electron- withdrawing and sterically demanding bis (sulfonamido) ligands lead to enhanced catalytic activity. Zirconium analogues have also been prepared, and the tosyl-substituted complex 20 has been structurally characterized. As in the titanium series, bis (sulfonamido) ...
Related Articles:
Palladium-catalyzed intramolecular addition of amines to acetylenes. Synthesis of cyclic imines
[Fukuda, Yukitoshi; Matsubara, Seijiro; Utimoto, Kiitiro Journal of Organic Chemistry, 1991 , vol. 56, # 20 p. 5812 - 5816]
[Murahashi, Shun-Ichi; Kodera, Yoichi Tetrahedron Letters, 1985 , vol. 26, # 38 p. 4633 - 4636]
Cyclic β-enaminoesters decarboxylation with boric acid: A convenient synthesis of cyclic imines
[Bacos, Daniel; Celerier, Jean-Pierre; Lhommet, Gerard Tetrahedron Letters, 1987 , vol. 28, # 21 p. 2353 - 2354]
Biodeterioration of cultural property: a bibliography
[Cervinka Collection of Czechoslovak Chemical Communications, 1959 , vol. 24, p. 1146,1148 Chemicke Listy, 1958 , vol. 52, p. 1145]
[Giovannini, Arianna; Savoia, Diego; Umani-Ronchi, Achille Journal of Organic Chemistry, 1989 , vol. 54, # 1 p. 228 - 234]