Regioselective addition of chalcogenol to an eta(3)-propargyl/allenyl complex via formation of the carbon-chalcogen bond leading to new chalcogenoxyallyl species

被引：24

作者：

Tsai, FY ^{[1
]}

Hsu, RH ^{[1
]}

Huang, TM ^{[1
]}

Chen, JT ^{[1
]}

Lee, GH ^{[1
]}

Wang, Y ^{[1
]}

机构：

[1] NATL TAIWAN UNIV,DEPT CHEM,TAIPEI 106,TAIWAN

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1996年 / 520卷 / 1-2期

关键词：

platinum; regioselective addition reactions; X-ray structure analysis; allenyl; propargyl; carbon-chalcogen bond formation;

D O I：

10.1016/0022-328X(96)06269-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Regioselective addition of chalcogenol to an eta(3)-propargl complex [Pt(PPh(3))(3)(eta(3)-C3H3)](BF4) (2) via the formation of the C-O, C-S, or C-Se bond generates new cationic chalcogenoxyallyl species {Pt(PPh(3))(2)[eta(3)-CH2C(ER)CH2]}(BF4) (E = O, R = Me (4a), Et (4b), Pr-i (4c), (t)Bu (4d), Ph (4e); E = S, R = Et (5b), Pr-i (5c), (t)Bu (5d), Ph (5e); E = Se, R = Ph (6e)) respectively in good yields. Thiol and selenol react with complex 2 much faster than alcohol; and 2 reacts with p-(HO)C6H4(SH) to exclusively yield the thioxyallyl product {Pt(PPh(3))(2)[eta(3)-CH2C(SC6H4OH)CH2]}(BF4) (5f). Among the alcohols and phenol, the reactivity follows the order MeOH> EtOH>(PrOH)-Pr-i>(t)BuOH>PhOH. A mechanism comprising a preceding coordination step is postulated. The X-ray structures of 4b, 4e, 5b, 5e and 6e are provided.

引用

页码：85 / 96

页数：12

共 15 条

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