78502-28-0

Upstream product

• 37860-51-8 tetraethylene glycol di(p-toluenesulfonate) 
• 119-53-9 2-hydroxy-2-phenylacetophenone 
• 78502-20-2 Z-α,β-(2-hydroxyethoxy-)-stilbene 
• 7460-82-4 diethylene glycol ditosylate 

Downstream Products

• 152639-19-5 Pr(NO₃)3(C₆H₅CC(C₆H₅)O(C₂H₄O)4)*H₂O 
• 152639-17-3 La(NO₃)3(C₆H₅CC(C₆H₅)O(C₂H₄O)4)*H₂O 
• 152639-18-4 Ce(NO₃)3(C₆H₅CC(C₆H₅)O(C₂H₄O)4)*H₂O 
• 152639-20-8 Nd(NO₃)3(C₆H₅CC(C₆H₅)O(C₂H₄O)4)*H₂O 
• 82982-15-8 2,3-diphenyl-15-crown-5 

Relevant academic research and scientific papers

Unsaturated Crown Ethers. 3. Syntheses of Stilbeno Crown Ethers

A series of 6-, 9-, and 15-membered monostilbeno crown ethers (3) and 18-, 24-, and 30-membered distilbeno crown ethers (4), some of which are new compounds, were synthesized in the base-induced reactions of benzoin (1) with oligoethylene glycol ditosylates (2a-d) in homogeneous and heterogeneous solutions.The template effect is shown to be effective in controlling product yields and 4/3 ratios.

UNSATURATED CROWN ETHERS: STILBENO-CROWN ETHERS

Stilbenocrown ethers 3a,c and 4a,b were synthesized in a cyclization reaction of benzoin with oligoethylene glycol ditosylates (2a-c) under a phase-transfer condition.Extractions of aqueous alkali picrates (Na+-Cs+) were examined with the distilbenocrown ethers 4a,b, the partially-hydrogenated tetraphenylcrown ethers 6a,b, and the fully-hydrogenated tetracyclohexylcrown ethers 7a,b.

CROWN ETHERS CONTAINING TRANS DOUBLE BONDS

The synthesis and spectroscopic properties of 18-crown-6-derivatives containing the E-α,β-dialkoxystilbene moiety as a ring member are described.These crown ethers are chiral but their complexing ability is drastically reduced as compared with the corresponding Z-isomers.