Metal-carbon and carbon-oxygen belated reactivity in tantalum p-tert-butylcalix[4]arene complexes undergoing organic functionalization

被引：39

作者：

Castellano, B

ZanottiGerosa, A

Solari, E

Floriani, C

ChiesiVilla, A

Rizzoli, C

机构：

[1] UNIV LAUSANNE,INST CHIM MINERALE & ANALYT,BCH,CH-1015 LAUSANNE,SWITZERLAND

[2] UNIV PARMA,DIPARTIMENTO CHIM,I-43100 PARMA,ITALY

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 23期

关键词：

D O I：

10.1021/om960666v

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

[(Calix[4]OMe)TaCl2] (2), formed from [calix[4](OMe)(2)] (1) and TaCl5 via a demethylation reaction, undergoes exhaustive alkylation to [(calix[4]OMe)TaR(2)] (3-5), which give photochemically or thermally induced concerted dealkylation at the metal and at the methoxy group, to give [calix[4]TaR] (6-8). Double migration air alkyl groups has been observed in the reaction of 3-5 with CO and Bu(t)NC to form the corresponding eta(2)-ketones [(calix[4]OMe)Ta(eta(2)-COR(2))] (9-11) and eta(2)-imines [(calix[4]OMe)Ta{eta(2)-N(Bu(t))CR(2)}] (12-14).

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页码：4894 / 4896

页数：3

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