A palladium catalysed cyclisation–carbonylation of bromodienes: control in carbonylation over facile β-hydride eliminationElectronic supplementary information (ESI) available: experimental. See http://www.rsc.org/suppdata/cc/b2/b201311h/
作者:Varinder K. Aggarwal、Paul W. Davies、William O. Moss
DOI:10.1039/b201311h
日期:2002.4.19
Conditions have been found for the efficient palladium mediated cyclisationâcarbonylation of bromodienes to give γ,δ-unsaturated acids.
已发现高效钯介导的溴二烯环化-羰基化反应条件,可得到γ,δ-不饱和酸。
Enantioselective Reductive Divinylation of Unactivated Alkenes by Nickel-Catalyzed Cyclization Coupling Reaction
作者:Jin-Bao Qiao、Ya-Qian Zhang、Qi-Wei Yao、Zhen-Zhen Zhao、Xuejing Peng、Xing-Zhong Shu
DOI:10.1021/jacs.1c05670
日期:2021.8.25
benzene-fused compounds. Herein, we report an enantioselective cross-electrophile divinylation reaction of nonaromatic substrates, 2-bromo-1,6-dienes. The approach thus offers a route to new chiral cyclic architectures, which are key structural motifs found in various biologically active compounds. The reaction proceeds under mild conditions, and the use of chiral t-Bu-pmrox and 3,5-difluoro-pyrox ligands
Palladium-Catalyzed Cycloalkylations of 2-Bromo-1,<i>n</i>-dienes with Organoboronic Acids
作者:Chang Ho Oh、Hye Rhyan Sung、Su Jin Park、Kyo Han Ahn
DOI:10.1021/jo025665t
日期:2002.10.1
Cascade palladium-catalyzed cycloalkylations of 2-bromo-1,n-dienes were accomplished in good to excellent yields, where the alkylpalladium intermediates, formed via an intramolecular Heck reaction of 2-bromo-1,n-dienes (n = 6 or 7), were successfully cross-coupled with various organoboronicacids. The optimal yields were achieved by the use of cesium carbonate in ethanol with Pd(PPh(3))(4) as catalyst
Homolytic reductive dehalogenation of aryl and alkyl halides by lithium aluminium hydride
作者:Athelstan L. J. Beckwith、Swee Hock Goh
DOI:10.1039/c39830000907
日期:——
Photochemically induced reductions by lithium aluminum hydride of various halogeno-compounds including vinyl bromides, aryl chlorides and fluorides, neophyl chloride, cyclohexyl chloride, and 7,7-dichloronorcarane in the presence of di-t-butyl peroxide afford good yields of dehalogenated products.
Multigram Synthesis of Heterabicyclo[n.1.0]alkan‐1‐yl Trifluoroborates
作者:Ihor Kleban、Yevhen Krokhmaliuk、Sofiia Reut、Serhii Shuvakin、Vyacheslav V. Pendyukh、Oleksandr I. Khyzhan、Dmytro S. Yarmoliuk、Andriy V. Tymtsunik、Yuliya V. Rassukana、Oleksandr O. Grygorenko
DOI:10.1002/ejoc.202000977
日期:2021.12.21
Multigram synthesis of oxa‐ and azabicyclo[n.1.0]alkan‐1‐yl trifluoroborates relying on efficient 4–5‐step reaction sequences is described. The title compounds was obtained in up to 50 g scale in a single run (10–41 % overall yield).
本文描述了依赖于有效的4-5步反应序列的oxa-和氮杂双环[ n .1.0]烷烃-1-基三氟硼酸酯的合成方法。一次即可获得高达50 g的标题化合物(总收率10–41%)。