Cyclotrimethine Dyes Derived from Squaric Acid
β Scribed by Prof. Dr. A. Treibs; Dipl.- Chem. K. Jacob
- Publisher
- John Wiley and Sons
- Year
- 1965
- Tongue
- English
- Weight
- 136 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
dcfinito object of obtnining clyce of diffcrcnt bhnrlelr of cnlour, ctipccinlly rcd, riolct, blirc nnd blnck, nnd powwing the good n!l roiinti ftwtlictn of ~~ciizeric-nzo.~~~!icylic wid. Tho object of tho inrrrtigntiun hne 11ccn nttaincd in t o fnr dyca of vnriorin t ludcr. iticltidiiig red, violct
## Abstract A homologue of fluorescein and a number of its derivatives have been prepared by the condensation of 2βmcthylrcsorcinol with phthalic and substituted phthalic anhydrides. Bromination and iodination of 4 :5βdimcthylfluorcsccin have given compounds corresponding to the dyes eosin and cryt