Synthesis and properties of the titanaoxacyclobutane derived from (Me(5)C(5))(2)Ti(O)(L) and allene

被引：28

作者：

Schwartz, DJ

Smith, MR

Andersen, RA

机构：

[1] UNIV CALIF BERKELEY,DEPT CHEM,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,DIV CHEM SCI,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 05期

关键词：

D O I：

10.1021/om950634s

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The oxo compound (C(5)Me(5))(2)TiO(pyr) (1) undergoes a 2 + 2 cycloaddition reaction with allene to give (Me(5)C(5))(2)Ti[OC(CH2)CH2] (2), which contains a puckered TiOC2 ring in the solid state. The metallacyclobutane 2 does not exchange with either free allene or pyridine on the NMR time scale and slowly converts to the ring-metalated product (C(5)Me(5))(C(5)Me(4)-CH2)Ti[OC(CH2)Me] (3) in solution and to the enolate complex (C(5)Me(5))(2)Ti[H][OC(CH2)Me] (4) in the presence of 1 atm of H-2.

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页码：1446 / 1450

页数：5

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