Cobalt-Catalyzed Cross-Couplings of Bench-Stable Alkynylzinc Pivalates with (Hetero)Aryl and Alkenyl Halides
作者:Jeffrey M. Hammann、Lucie Thomas、Yi-Hung Chen、Diana Haas、Paul Knochel
DOI:10.1021/acs.orglett.7b01722
日期:2017.7.21
A catalytic system consisting of CoCl2·2LiCl and TMEDA enables the cross-coupling of various electron-poor aryl and heteroaryl halides with various alkynylzinc pivalates. Coupling with alkenyl halides proceeds with retention of configuration.
Cobalt-Catalyzed Diastereoselective Cross-Couplings between Alkynylzinc Pivalates and Functionalized Cyclic Iodides or Bromides
作者:Lucie Thomas、Ferdinand H. Lutter、Maximilian S. Hofmayer、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1021/acs.orglett.8b00784
日期:2018.4.20
Various 1,2-, 1,3-, and 1,4-substituted cyclic iodides or bromides undergo highly diastereoselective cross-couplings (diastereoselectivity (dr) up to 99:1) with a range of alkynylzinc pivalates, using CoCl2 (20 mol %) and trans-N,N,N',N'-tetramethylcyclohexane-1,2-diamine as a catalytic system.
Yoshii, Eiichi; Takeda, Kei, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 12, p. 4586 - 4588
作者:Yoshii, Eiichi、Takeda, Kei
DOI:——
日期:——
Synthesis of the C21–C28 segment of pectenotoxin-4
作者:Robert V. Kolakowski、Lawrence J. Williams
DOI:10.1016/j.tetlet.2007.04.148
日期:2007.7
The synthesis of the C21-C28 segment of pectenotoxin-4 as the C21 Weinreb amide is described. Feasibility studies for the union of a related Weinreb amide and a functionalized alkyne are also reported. (c) 2007 Elsevier Ltd. All rights reserved.
NAPETVARIDZE L. D.; TALAKVADZE T. G., SAKARTVELOS POLITEKNIKURI INSTITUTI. SHROMEBI, TR. GRUZ. POLITEXN. IN-TA.+