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Chapter 1
Synthesis of functionalized pyrimidines
Figure-33
Zhengyin Du et al. 65 has reported an ultrafast and highly efficient ligand-free
Suzuki-Miyaura cross-coupling reaction between aryl bromides/iodides and aryl
boronicacids using palladium chloride as catalyst in PEG-400/H 2 O in air at room
temperature. TEM showed that palladium nanoparticles were generated in situ from
PdCl 2 /PEG-400/H 2 O without use of other reductants. The catalyst system can be
recycled to reuse three times with good yields (Figure-34).
Figure-34
Yu-Long Zhao et al. 66 has prepared a highly practical and reliable Nickel
catalyst for Suzuki–Miyaura coupling of aryl halides with various aryl boronicacid
(Figure-35).
Figure-35
Sha Lou et al. 67 has developed Palladium/Tris(tert-butyl)phosphine-Catalyzed
Suzuki Cross-Couplings of aryl and heteroaryl halides with aryl and heteroaryl
boronic acids in the Presence of Water (Figure-36).
Figure-36
Ruonan Zhang et al. 68 has synthesized a series of novel 5-arylidenefuran-
2(5H)-ones and 5-arylidene-4-arylfuran-2(5H)-ones via the Suzuki-Miyaura reactions
(Figure-37).
Figure-37
Department of Chemistry, Saurashtra University, Rajkot-360005 16