Formal synthesis of Manzamine C via a sila-Cope elimination
摘要:
Piperidine derivative 7, prepared in six steps from 2-methylpyridine, afforded by a sila-Cope elimination aminoalcohol 10 which is a direct synthetic precursor of the azaundecene ring of Manzamine C 2. (C) 1998 Elsevier Science Ltd. All rights reserved.
Lewis Acid Promoted Benzylic Cross-Couplings of Pyridines with Aryl Bromides
作者:Stéphanie Duez、Andreas K. Steib、Sophia M. Manolikakes、Paul Knochel
DOI:10.1002/anie.201103074
日期:2011.8.8
Either ZnCl2, Sc(OTf)3 , or BF3⋅OEt2 can promote the palladium‐catalyzed arylation of methylpyridines and related heterocycles (see example). The complexation of the Lewisacid to the nitrogen atom in the heterocycle facilitates the reductive elimination, leading to various arylated pyridines in high yields. BF3⋅OEt2 was also found to promote highly regioselective metalations in the case of 2,4‐lutidine
Palladium-Catalyzed Direct Arylation of 2-Pyridylmethyl Silanes with Aryl Bromides
作者:Tingzhi Lin、Pengcheng Qian、Yan-En Wang、Mingjie Ou、Long Jiang、Chen Zhu、Yuchuan Xu、Dan Xiong、Jianyou Mao
DOI:10.1021/acs.orglett.1c00677
日期:2021.4.16
The first palladium-catalyzeddirectarylation of 2-pyridylmethyl silanes with aryl bromides to generate a diverse array of aryl(2-pyridyl)-methyl silane derivatives has been developed. This protocol facilitates access to various kinds of heterocycle-containing silanes in good to excellent yields (40 examples, 66–97% yield) with good functional group tolerance. The scalability of this transformation
LANGLOIS, Y.;KONOPSKI, L.;BAC, N. V.;CHIARONI, A.;RICHE, C., TETRAHEDRON LETT., 31,(1990) N3, C. 1865-1868
作者:LANGLOIS, Y.、KONOPSKI, L.、BAC, N. V.、CHIARONI, A.、RICHE, C.
DOI:——
日期:——
Formal synthesis of Manzamine C via a sila-Cope elimination
作者:Thierry Vidal、Emmanuel Magnier、Yves Langlois
DOI:10.1016/s0040-4020(98)00270-1
日期:1998.5
Piperidine derivative 7, prepared in six steps from 2-methylpyridine, afforded by a sila-Cope elimination aminoalcohol 10 which is a direct synthetic precursor of the azaundecene ring of Manzamine C 2. (C) 1998 Elsevier Science Ltd. All rights reserved.