Practical Ni-Catalyzed Cross-Coupling of Unsaturated Zinc Pivalates with Unsaturated Nonaflates and Triflates
摘要:
A practical nickel-catalyzed cross-coupling of (hetero)aryl or alkynylzinc pivalates with various unsaturated nonaflates or triflates is described. Organozinc pivalates allow these cross-couplings to take place with high yields and a low catalyst loading (0.5 mol %). Couplings with (E)- and (Z)-alkenyl triflates proceed with retention of configuration.
Microwave-Assisted Trans-Halogenation Reactions of Various Chloro-, Bromo-, Trifluoromethanesulfonyloxy- and Nonafluorobutanesulfonyloxy-Substituted Quinolines, Isoquinolines, and Pyridines Leading to the Corresponding Iodinated Heterocycles
作者:Alex C. Bissember、Martin G. Banwell
DOI:10.1021/jo9008386
日期:2009.7.3
Microwave irradiation of certain chloro-, bromo-, trifluoromethanesulfonyloxy- and nonafluorobutanesulfonyloxy-substituted quinolines in the presence of acetic. anhydride and sodium iodide leads, via a trans-halogenation process, to the corresponding iodides in high yield. Related conversions involving pyridines and isoquinolines can also be achieved under similar conditions.
SUBRAMANIAN, L. R.;GARCIA, MARTINEZ, A.;HERRERA, FERNANDEZ, A.;MARTINEZ, +, SYNTHESIS, BRD, 1984, N 6, 481-485
作者:SUBRAMANIAN, L. R.、GARCIA, MARTINEZ, A.、HERRERA, FERNANDEZ, A.、MARTINEZ, +