Pang, Xudong; Wang, Xuan; Shen, Yongjia published the artcile< Synthesis of 4,4'-bis (2-cyanovinyl)-stilbene>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is fluorescent brightener biscyanovinylstilbene synthesis.
The theory of whitening of fluorescent brightening agents was introduced briefly. A hypothesis of the whitening effect of a stilbene brightener related to the number of vinyl groups was suggested. A compound containing three vinyl groups, 4,4′-bis(2-cyanovinyl)-stilbene, was designed and synthesized from p-nitrobenzyl halogen by Wittig reaction, hydrazine-reduction and Meerwein reaction. The yield was 37% and its chem. structure was characterized by 1H-NMR and MS. The test results indicated that its fluorescence strength was a little higher than that of C. I. Fluorescent Whitener Agent 199 and the hypothesis was proved preliminary.
Ranliao Yu Ranse published new progress about Fluorescence. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics