Synthesis and unique reversible splitting of 14-membered cyclic aminomethylphosphines on to 7-membered heterocycles.
Dalton Trans
; 44(30): 13565-72, 2015 Aug 14.
Article
em En
| MEDLINE
| ID: mdl-26135988
ABSTRACT
A novel type of 14-membered cyclic polyphosphine, namely 1,8-diaza-3,6,10,13-tetraphosphacyclotetradecanes 2a4ahas been synthesized by the condensation of 1,2-bis(phenylphosphino)ethane, formaldehyde and alkylamines (isopropylamine, ethylamine and cyclohexylamine) as a RRRR/SSSS-stereoisomer. The structure of macrocycle 2a was investigated by NMR-spectroscopy and X-ray crystal structure analysis. The unique reversible processes of macrocycles 2a4a splitting onto the corresponding rac- (2b4b) and meso- (2c4c) stereoisomers of 1-aza-3,6-diphosphacycloheptanes were discovered.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfinas
/
Cicloeptanos
/
Compostos Macrocíclicos
/
Aminas
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article