A cross-coupling reaction between aryl- and vinylboronicacids and various allylic bromides proceeded without the use of a transition-metal catalyst to give the corresponding allylated products in moderate to good yields. The use of an inorganic base (KF or Cs2CO3) and a small amount of water is crucial in obtaining good performance in the present transition-metal-free reaction. transition-metal-free
在不使用过渡金属催化剂的情况下,进行了芳基和乙烯基硼酸与各种烯丙基溴之间的交叉偶联反应,以中等至良好的产率得到了相应的烯丙基化产物。在目前的无过渡金属反应中,使用无机碱(KF或Cs 2 CO 3)和少量水对于获得良好的性能至关重要。 无过渡金属-CC键形成-芳基和乙烯基硼酸
Delaby; Lecomte, Bulletin de la Societe Chimique de France, 1937, vol. <5>4, p. 750
作者:Delaby、Lecomte
DOI:——
日期:——
Delaby, Bulletin de la Societe Chimique de France, 1936, vol. <5>3, p. 2380
作者:Delaby
DOI:——
日期:——
Moenomycin analogues with modified lipid side chains from indium-mediated Barbier-type reactions
From moenomycin A both the chromophore part and the Lipid side chain were degraded by ozonolysis to give an analogue with a glycolaldehyde unit in 2-position of the glyceric acid moiety. The aldehyde was converted to a number of homoallylic alcohols by indium-mediated Barbier-type reactions with allylic and benzylic halides. With exception of the phytyl bromide-derived reaction product all compounds were antibiotically inactive. (C) 2001 Elsevier Science Ltd. All rights reserved.