67820-48-8

Basic information

• Product Name: Benzene, 1,1'-(2,2-diethoxyethylidene)bis-
• CAS NO: 67820-48-8
• Molecular Formula: C18H22O2
• Molecular Weight: 270.371
• Mol File: 67820-48-8.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Benzene, 1,1'-(2,2-diethoxyethylidene)bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-(2,2-diethoxyethylidene)bis-(67820-48-8)
• EPA Substance Registry System: Benzene, 1,1'-(2,2-diethoxyethylidene)bis-(67820-48-8)

Safety Data

• Hazardous Substances Data: 67820-48-8(Hazardous Substances Data)

Upstream product

• 947-91-1 Diphenylacetaldehyde 
• 64-17-5 ethanol 
• 111238-39-2 1-azido-2,2-diphenyl-1-methoxyethane 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 122-51-0 orthoformic acid triethyl ester 
• 998-30-1 Triethoxysilane 
• 1439-07-2 trans-Stilbene oxide 
• 105-58-8 Diethyl carbonate 

Relevant articles and documents

Antimony(v) catalyzed acetalisation of aldehydes: An efficient, solvent-free, and recyclable process

A highly selective, solvent-free process for the acetalisation of aldehydes was achieved by the use of a readily accessible antimony(v) catalyst which we previously prepared in our lab as a tetraarylstibonium triflate salt ([1][OTf]). High yields of the acetals were achieved in the presence of stoichimetric amounts of either triethoxymethane or triethoxysilane. It was found that triethoxymethane reactions required longer time to reach completion when compared to triethoxysilane reactions which were completed upon mixing of the reagents. The products can be easily separated from the catalyst by distillation which enabled further use of [1][OTf] in additional calytic reactions (up to 6 cycles). Moreover, [1]+ also catalyzed the deprotection of the acetals into their corresponding aldehydes using only water as a solvent.

Rearrangement of trans-stilbene into diphenylacetaldehyde acetals induced by direct anodic oxidation

Direct anodic oxidation of trans-stilbene in lower alcohols and in some other solvents in the presence of KF or Bu4NBF4 is accompanied by its electrooxidatve rearrangement into diphenylacetaldehyde acetals; a competing reaction yields 1,2-dialkoxy-1,2-diphenylethanes. - Keywords: trans-stilbene; electrooxidation; rearrangement.

THE CHEMISTRY OF SOME METHOXYCHLOR DERIVATIVES

The preparation of 1-chloro-2,2-bis(p-methoxyphenyl)ethylene (3a) and of 1-chloro-2,2-bis(p-hydroxyphenyl)ethylene (3b), required for a study of the microbial degradation of methoxychlor (1a) was reinvestigated.The methoxy compound (3a) was readily obtained by alkaline dehydrohalogenation of 1,1-dichloro-2,2-bis(p-methoxyphenyl)ethane (2a), but similar treatment of 1,1-dichloro-2,2-bis(p-hydroxyphenyl)ethane (2b) gave a chlorine-free compound, characterized as the diethyl acetal of 2,2-bis(p-hydroxyphenylacetaldehyde (5a) on the basis of spectroscopic evidence and comparison with a model compound.Also, 2,2-bis(p-methoxyphenyl)acetic acid (4a) and 2,2-bis(p-hydroxyphenyl)acetic acid (4b) were prepared and the solubility and p-values (ethyl acetate / water) of these acids were determined.