PREPARATION OF THE 1,2-DI-TERT-BUTYLCYCLOPENTADIENYL ANION AND A TRANSITION-METAL DERIVATIVE - CRYSTAL-STRUCTURE OF 1,1',2,2'-TETRA-TERT-BUTYLFERROCENE

被引：24

作者：

HUGHES, RP ^{[1
]}

KOWALSKI, AS ^{[1
]}

LOMPREY, JR ^{[1
]}

RHEINGOLD, AL ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT CHEM,NEWARK,DE 19716

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 07期

关键词：

D O I：

10.1021/om00019a027

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The titanium promoted cyclization of the diketone ButC(O)CH2CH2CH2C(O)Bu(t), 1, affords 1,2-di-tert-butyl-1,2-cyclopentanediol, 2. Further reaction of 2 with POCl3 in hot pyridine results in dehydration to give the new vicinally di-tert-butyl-substituted cyclopentadiene, 3, which exists mainly as the 1,5-di-tert-butylcyclopentadiene tautomer 3b. As with other cyclopentadienes, 3 reacts cleanly with Bu(n)Li to give the corresponding lithium cyclopentadienide, 4, which in turn reacts with FeCl2.2THF to form 1,1',2,2'-tetra-tert-butylferrocene, 5. The structure of 5 has been confirmed by single crystal X-ray crystallography: Crystal data for 5 with Mo Kalpha (lambda = 0.7107 angstrom) radiation at 246 K: C26H42Fe, a = 16.135(3) angstrom, b = 8.416(1) angstrom, c = 16.800(3) angstrom, orthorhombic space group Cmca (No. 64), Z = 4, R = 0.0543, R(w) = 0.0734.

引用

页码：2691 / 2695

页数：5

共 33 条

[1] THE CRYSTAL AND MOLECULAR-STRUCTURE OF (MU(5)-PENTAPHENYLCYCLOPENTADIENYL) (MU(5)-CYCLOPENTADIENYL)IRON(II), 1,2,3,4,5-PENTAPHENYLFERROCENE, [FE(C5PH5)(C5H5)] [J].