Iodine(V) Reagents in Organic Synthesis. Part 4. <i>o</i>-Iodoxybenzoic Acid as a Chemospecific Tool for Single Electron Transfer-Based Oxidation Processes
作者:K. C. Nicolaou、T. Montagnon、P. S. Baran、Y.-L. Zhong
DOI:10.1021/ja012127+
日期:2002.3.1
o-Iodoxybenzoic acid (IBX), a readily available hypervalent iodine(V) reagent, was found to be highly effective in carrying out oxidations adjacent to carbonyl functionalities (to form alpha,beta-unsaturated carbonyl compounds) and at benzylic and related carbon centers (to form conjugated aromatic carbonyl systems). Mechanistic investigations led to the conclusion that these new reactions are initiated
Synthesis and structural studies of [n](2,4)pyridinophane ring system
作者:Nobuhiro Kanomata、Makoto Nitta
DOI:10.1016/s0040-4039(00)82239-x
日期:1988.1
The facile synthesis of [n](2,4)pyridinophane ring system (n = 9–6) was accomplished by the reaction of N-(1-phenylvinyl)iminophosphorane with cyclic α, β-unsaturated ketones. The chain flipping was studied by 1H NMR spectra at various temperatures.
[n](2,4)吡啶环体系(n = 9–6)的简便合成是通过N-(1-苯基乙烯基)亚氨基正膦与环状α,β-不饱和酮的反应完成的。通过在不同温度下的1 H NMR光谱研究了链翻转。
Bissinger, Hans-Joachim; Detert, Heiner; Meier, Herbert, Liebigs Annalen der Chemie, 1988, p. 221 - 224
作者:Bissinger, Hans-Joachim、Detert, Heiner、Meier, Herbert
DOI:——
日期:——
Application of Rh(I)-Catalyzed C−H Bond Activation to the Ring Opening of 2-Cycloalkenones in the Presence of Amines
作者:Chul-Ho Jun、Choong Woon Moon、Sung-Gon Lim、Hyuk Lee
DOI:10.1021/ol025816e
日期:2002.5.1
Herein described is the application of the Rh(1)-catalyzed C-H bond activation to the ring-opening of 2-cycloalkenones in the presence of cyclohexylamine. This reaction includes the C-C double bond cleavage of 2-cycloalkenones through the conjugate addition of cyclohexylamine followed by the retro-Mannich-type fragmentation. The resulting ring-opened intermediates subsequently underwent either chelation-assisted hydroacylation to afford a ring-opened dicarbonyl compound or beta-alkylation via a ring contraction.