Preparation and structural features of lithium cyclopentadienides that contain amino acid-derived Cp-substituents

Citation
D. Kunz et al., Preparation and structural features of lithium cyclopentadienides that contain amino acid-derived Cp-substituents, ORGANOMETAL, 20(3), 2001, pp. 572-574
Citations number
33
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
3
Year of publication
2001
Pages
572 - 574
Database
ISI
SICI code
0276-7333(20010205)20:3<572:PASFOL>2.0.ZU;2-G
Abstract
Treatment of N-protected amino acid active esters, e.g., 3, formed by, the reaction of N,N-dibenzyl-alanine (2) with DCC and hydroxybenztriazole, with 2 molar equiv of CpLi gives the corresponding amino acid-substituted Cp-an ion equivalents (e.g., 4). The X-ray crystal structure analysis of 4 has re vealed a dimeric pentafuluenolate-type structure. Reaction of FeCl2 or (PPh 3)(3)RuCl2 with compound 4 and related reagents yields the respective 1,1'- difunctionalized metallocenes (7, 8).