SODIUM TETRAPHENYLBORATE AS A PHENYLATING REAGENT IN THE PALLADIUM-CATALYZED PHENYLATION OF ALKENES AND ACID-CHLORIDES

被引:0
作者
CHO, CS [1 ]
ITOTANI, K [1 ]
UEMURA, S [1 ]
机构
[1] KYOTO UNIV,FAC ENGN,DEPT HYDROCARBON CHEM,KYOTO 60601,JAPAN
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D O I
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中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Sodium tetraphenylborate (NaBPh4) reacts with terminal alkenes in acetic acid at 25-degrees-C in the presence of a catalytic amount of palladium(II) acetate together with silver acetate as a re-oxidant to give the corresponding phenylated alkenes in 22-87% yield. It also reacts with acid chlorides in tetrahydrofuran (THF) at 25-degrees-C in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium(0) to give the corresponding phenyl ketones in 51-100% yield. Carbonylation of the borate with 1-30 atm carbon monoxide (CO) in methanol at 25-degrees-C in the presence of palladium(II) acetate or sodium chloropalladate (Na2PdCl4) affords a low yield (9-30%) of benzophenone and methyl benzoate, a higher pressure favoring the formation of the latter.
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页码:253 / 259
页数:7
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