Nickel-catalyzed coupling reaction of lithium organoborates and aryl mesylates possessing an electron withdrawing group
摘要：
In the presence of NiCl 2 (PPh 3 ) 2 as catalyst, p-methoxycarbonylphenyl mesylate ( 5 ) and tosylate ( 6 ) react with lithium arylborates 4 (Ar = 2-furyl, Ph, p-Me-Ph; p-Me-Ph) at room temperature to afford the coupling products in high yields. Similarly, mesylates 9–11 coupled with these borates 4 efficiently.
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关键词：
L-aspartic acid gamma-oxo alpha-amino acids 5-hydroxy-4-oxo-norvaline 4-oxo-L-pipecolic acid Stille reaction intramolecular Michael addition hexafluoroacetone
DOI：
10.1016/0040-4039(96)01984-3
被引量：
年份：
1996
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