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Titolo:
Syntheses of diazadithiacrown ethers containing two 8-hydroxyquinoline side arms
Autore:
Song, HC; Bradshaw, JS; Chen, YW; Xue, GP; Chiara, JA; Krakowiak, KE; Savage, PB; Xue, ZL; Izatt, RM;
Indirizzi:
Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA Brigham YoungUniv Provo UT USA 84602 Chem & Biochem, Provo, UT 84602 USA Zhongshan Univ, Dept Chem, Guangzhou 510275, Peoples R China Zhongshan Univ Guangzhou Peoples R China 510275 510275, Peoples R China
Titolo Testata:
ARKIVOC
, volume: 2, anno: 2001,
parte:, 3
pagine: NIL_32 - NIL_45
Fonte:
ISI
Lingua:
ENG
Soggetto:
MACRORING NITROGEN-ATOMS; DIAZA-18-CROWN-6 LIGANDS; MANNICH REACTION; METAL-CATIONS; CROWN; COMPLEXATION; UNITS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Bradshaw, JS Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA Brigham Young Univ Provo UT USA 84602 m, Provo, UT 84602 USA
Citazione:
H.C. Song et al., "Syntheses of diazadithiacrown ethers containing two 8-hydroxyquinoline side arms", ARKIVOC, 2, 2001, pp. NIL_32-NIL_45

Abstract

Ten new diazadithiacrown ethers containing two 8-hydroxyquinoline (HQ) sidearms attached through the HQ 7-positions and four new diazadithiacrown ethers containing two HQ sidearms attached through the HQ 2-positions have been prepared. Some of these new ligands also contain a hydroxymethyl substituent. The starting macrocyclic diazadithiacrown ethers were obtained by treatment of a bis(a-chloroamide) with the appropriate dimercaptan using K2CO3 as the base followed by reduction of the resulting macrocyclic dithiadiamide by BH3-THF or by NaBH4 in the presence of BF3-ether as a catalyst. HQ-containing ligands 23-32 were synthesized by a Mannich reaction of the secondary macrocyclic diamines with the substituted-8-hydroxyquinoline. HQ-containing ligands 33-36 were prepared by reductive amination of the secondary macrocyclic diamines with 8-hydroxyquinoline-2-carbaldehyde. The HQ-containingdiazadithiacrown ethers which also contain a hydroxymethyl group on the macroring (23-29, 33, and 35) are more soluble in polar solvents than those without the hydroxymethyl group.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 01:39:30