Extended conjugation in di- and tri-arylmethane dyes. Part 4. Steric and electronic effects in analogues of Malachite Green containing a 2H-1-benzopyran unit

Authors
Clayton, SE Guinot, SGR Hepworth, JD Wainwright, M
Citation
Se. Clayton et al., Extended conjugation in di- and tri-arylmethane dyes. Part 4. Steric and electronic effects in analogues of Malachite Green containing a 2H-1-benzopyran unit, J CHEM S P2, (2), 2000, pp. 263-269
Citations number
59
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
ISSN journal
03009580 → ACNP
Issue
2
Year of publication
2000
Pages
263 - 269
Database
ISI
SICI code
0300-9580(2000):2<263:ECIDAT>2.0.ZU;2-S
Abstract
Triarylmethane dyes containing a 2,2-dimethyl-2H-1-benzopyran unit have bee n synthesised. The visible spectral parameters of these novel dyes are akin to those of the 1- and 2-naphthyl analogues of Malachite Green with the ef fects of a methoxy group superimposed to represent the influence of the oxy gen heteroatom. Steric constraints are accommodated by an increased departu re from molecular coplanarity along the y-axis.