DEUTERIOFORMYLATION OF (E)-2-BUTENE AND PROTIOFORMYLATION OF (E)-1,1,1-(H-2)-H-3-2-BUTENE WITH COBALT, RHODIUM AND PLATINUM CATALYSTS

被引:11
作者
CONSIGLIO, G
MORANDINI, F
HAELG, P
PINO, P
机构
来源
JOURNAL OF MOLECULAR CATALYSIS | 1990年 / 60卷 / 03期
关键词
D O I
10.1016/0304-5102(90)85259-K
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The protioformylation of (E)-1,1,1-2H3-2-butene and the deuterioformylation of (E)-2-butene have been carried out using Co2(CO)8, Rh4(CO)12 or Pt(SnCl3)Cl{(R, R)-Diop} as the catalyst precursor. The formation of the straight chain aldehyde, which implies hydrogen abstraction from a saturated methyl group, shows a positive isotope effect for the rhodium (~3 at 100 °C) and for the platinum (~2.1 at 80 °C) but none for the cobalt catalytic system. In the reactions catalyzed by Co2(CO)8, essentially no scrambling of the label takes place with the gas phase. The addition-elimination reaction of the metal hydride to the olefinic substrate is more rapid for the cobalt catalyst than for the other two systems, but does not imply olefin dissociation. © 1990.
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页码:363 / 374
页数:12
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