Topological selectivity in the intramolecular [4 + 1] pyrroline annulation. Formal total stereospecific synthesis of (.+-.)-supinidine, (.+-.)-isoretronecanol, and (.+-.)-trachelanthamidine
Topological selectivity in the intramolecular [4 + 1] pyrroline annulation. Formal total stereospecific synthesis of (.+-.)-supinidine, (.+-.)-isoretronecanol, and (.+-.)-trachelanthamidine
Preparation of polyfunctional aryl and alkenyl zinc halides from functionalized unsaturated organolithiums and their reactivity in cross-coupling and conjugated addition reactions
作者:Ingo Klement、Mario Rottländer、Charles E. Tucker、Tahir N. Majid、Paul Knochel、Patricia Venegas、Gérard Cahiez
DOI:10.1016/0040-4020(96)00246-3
日期:1996.5
organolithiums which are stable for a short time at these low temperatures and can be transmetalated to organozinc derivatives by the addition of zinc bromide. The resulting unsaturated organozinc halides can then be warmed up and are perfectly stable at 25 °C. They react directly with tosyl cyanide. In the presence of CuCN·2LiCl, they add in a Michael-fashion to alkylidenemalonates. In the presence
Preparation of highly functionalized magnesium, zinc, and copper aryl and alkenyl organometallics via the corresponding organolithiums
作者:Charles E. Tucker、Tahir N. Majid、Paul Knochel
DOI:10.1021/ja00036a060
日期:1992.5
Topological selectivity in the intramolecular [4 + 1] pyrroline annulation. Formal total stereospecific synthesis of (.+-.)-supinidine, (.+-.)-isoretronecanol, and (.+-.)-trachelanthamidine
作者:Tomas. Hudlicky、James O. Frazier、Gustavo. Seoane、Mark. Tiedje、Ana. Seoane、Lawrence D. Kwart、Chris. Beal