CO2 促进钯配合物活化烯丙醇和胺中的 C-O 和 C-N 键。亲核试剂烯丙基化、羰基化和烯丙胺歧化的合成应用
摘要:
通过在 CO2 下进行反应,钯配合物催化的烯丙醇中 C-O 键的直接活化得到了加速。与二乙胺反应,在常压二氧化碳和常压下,在钯配合物存在下,烯丙醇可转化为N,N-二乙基烯丙胺。在钯配合物和 CO2 存在下,直接使用烯丙醇可以实现各种碳亲核试剂的烯丙基化,例如 β-酮酯和 β-二酮。在CO和CO2的压力下,钯配合物可以催化烯丙醇直接羰基化为不饱和羧酸。二烯丙胺歧化成三烯丙胺和烯丙胺也在 CO2 存在下由钯配合物催化。
with esters and ether derivatives of allyl alcohol (2a-c) and related allyl-substituted compounds (4a-e) is reported. Special attention is paid to solvent and salteffects on catalytic activities and kinetic profiles for the formation of allylamines. The results are discussed in terms of the influence of some reaction parameters (polarity, ion exchange processes, substrate) on the rate determining step
Reactions of amines and active methylene compounds with buta-1,3-diene and isoprene: catalysis by nickel, cobalt, rhodium, and iridium complexes
作者:Raymond Baker、Alan Onions、Roger J. Popplestone、Trevor N. Smith
DOI:10.1039/p29750001133
日期:——
amounts of hydrochloric acid. Some reactions of diethylamine, pyrrolidine, and aniline have been studied. Reaction of benzyl methyl ketone and diethyl malonate with buta-1,3-diene catalysed by NiCl2–Ph3P–NaBH4 yields mainly the 2 : 1 adducts. With the system CoCI2-Ph3P-NaBH4, prior formation of the sodium salt of diethyl malonate was required for reaction with buta-1,3-diene.
The cyclodimerization of butadiene catalyzed by bis(tri-n-butylphosphine)dibromonickel combined with sodium borohydride was investigated, using amines as protonic solvents. At 80°C a large amount of amine-adducts to butadiene was obtained together with 2-methylenevinylcyclopentane. The adducts were formed exclusively at room temperature.
Kandeel, Kamal A.; Vernon, John M., Journal of the Chemical Society. Perkin transactions I, 1987, p. 2023 - 2026
作者:Kandeel, Kamal A.、Vernon, John M.
DOI:——
日期:——
Activation of C–O and C–N Bonds in Allylic Alcohols and Amines by Palladium Complexes Promoted by CO<sub>2</sub>. Synthetic Applications to Allylation of Nucleophiles, Carbonylation, and Allylamine Disproportionation
作者:Masato Sakamoto、Isao Shimizu、Akio Yamamoto
DOI:10.1246/bcsj.69.1065
日期:1996.4
can be achieved by using allylicalcohols directly in the presence of palladium complexes and CO2. Direct carbonylation of allylicalcohols into unsaturated carboxylic acids can be catalyzed by palladium complexes under the pressure of CO and CO2. Disproportionation of diallylamine into triallylamine and allylamine is also catalyzed by palladium complexes in the presence of CO2. On the basis of studies
通过在 CO2 下进行反应,钯配合物催化的烯丙醇中 C-O 键的直接活化得到了加速。与二乙胺反应,在常压二氧化碳和常压下,在钯配合物存在下,烯丙醇可转化为N,N-二乙基烯丙胺。在钯配合物和 CO2 存在下,直接使用烯丙醇可以实现各种碳亲核试剂的烯丙基化,例如 β-酮酯和 β-二酮。在CO和CO2的压力下,钯配合物可以催化烯丙醇直接羰基化为不饱和羧酸。二烯丙胺歧化成三烯丙胺和烯丙胺也在 CO2 存在下由钯配合物催化。