DEALKYLATION OF THIOLS BY ALKYNE-BRIDGED DIMOLYBDENUM COMPLEXES

被引:19
作者
ADAMS, H [1 ]
BAILEY, NA [1 ]
GAY, SR [1 ]
HAMILTON, T [1 ]
MORRIS, MJ [1 ]
机构
[1] UNIV SHEFFIELD,DEPT CHEM,SHEFFIELD S3 7HF,S YORKSHIRE,ENGLAND
关键词
MOLYBDENUM; CARBONYL; THIOL; ALKYNE; VINYL; CRYSTAL STRUCTURE;
D O I
10.1016/0022-328X(95)05448-X
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reaction of [Mo-2(CO)(4){mu-C-2)(CO(2)Me)(2)}(eta-C5H5)(2)] with RSH produces the mu-vinyl complexes [Mo-2(CO)(2){mu-C(CO(2)Me) = CHCO(2)Me}(mu mu-SR)(eta-C5H5)(2)] when R = Et or Pr-i but, for R = (t)Bu, dealkylation of the thiol and further hydrogenation of the alkyne occurs to give [Mo-2(mu-S)(2)(mu-eta(2),eta(1),eta(1)-cis-MeO(2)CCH = CHCO(2)Me)(eta-C5H5)(2)] in which the alkene dimethyl maleate acts as a six-electron donor ligand through its double bond and the carbonyl oxygen atoms of both CO(2)Me groups. In contrast, treatment of [Mo-2(CO)(4)(mu-C(2)Me(2))(eta-C5H5)(2)] with RSH provides a convenient new route to compounds of the type [Mo-2(mu-S)(2)(mu-SR)(2)(eta-C5H5)(2)] when R = Et or(1)Pr.
引用
收藏
页码:C25 / C28
页数:4
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