118852-20-3

Upstream product

• 1081-75-0 1,3-diphenylpropane 
• 102-04-5 1,3-Diphenylpropanone 
• 10602-01-4 p-bromobenzaldehyde 1,3-dioxolane 
• 121733-11-7 1,3-bis(4-hydroxymethylphenyl)propane 
• 70336-38-8 1,3-bis(4-chloromethylphenyl)propane 
• 201230-82-2 carbon monoxide 
• 121733-10-6 1,3-bis(4-ethoxycarbonylphenyl)propane 

Downstream Products

• 930585-77-6 C₄₇H₄₈O₆ 
• 118331-06-9 3.3'-(trimethylenedi-4,1-phenylene)bis<2-propenoyl chloride> 
• 5737-31-5 1,3-bis(4-cyanophenyl)propane 
• 35872-69-6 4,4-propanediyl-bis-benzamidine 
• 930585-82-3 (4-{4-butyl-5-[4-(3-{4-[3-butyl-5-(4-hydroxymethyl-phenyl)-furan-2-yl]-phenyl}-propyl)-phenyl]-furan-2-yl}-phenyl)-methanol 
• 930585-87-8 C₄₅H₄₄O₄ 
• 7215-81-8 <2,3>-Paracyclophan 
• 125260-23-3 3.3'-(trimethylenedi-4,1-phenylene)bis<2-propenoic acid> 

Relevant academic research and scientific papers

A bridging double bond as an electron acceptor for optical nonlinearity of furan-containing [n.2]cyclophenes

All in the twist: Unusually large Stokes shifts and nonlinear optical properties are exhibited by furan-containing teraryl cyclophene derivatives (see picture). These cyclophenes have neither particularly strong electron-donating nor electron-withdrawing

Influence of Conformation and Proton-Transfer Dynamics in the Dibenzyl σ-Complex on Regioselectivity in Gattermann-Koch Formylation via Intracomplex Reaction

The Gattermann-Koch formylations of diphenyl, diphenylmethane, dibenzyl, and 1,3-diphenyl- propane were studied in HF-SbF5, -TaF5, -BF3, -NbF5, and CF3SO3H-SbF5. While usual high para regioselectivity was obtained for diphenyl, diphenylmethane, and 1,3-diphenylpropane, unprecedented ortho regioselectivity was observed for dibenzyl which increased with decreasing the SbF5/dibenzyl molar ratio and with strength of Lewis acids used in HF. A sandwich-like complex for monoprotonated dibenzyl resulting in ortho regioselectivity via the intracomplex reaction was suggested; therefore, the conformations of protonated diphenylmethane, dibenzyl, and 1,3- diphenylpropane and their proton-transfer dynamics were probed by semiempirical calculation (PM3). The calculation predicted that ortho monoprotonation was slightly preferable for dibenzyl, and remarkable preference of dibenzyl over other aromatic compounds was observed in ortho- ortho intramolecular inter-ring proton transfer via a fan-shaped complex rather than a sandwich- like complex. The experimental and theoretical data for dibenzyl are compatible with the intracomplex reaction, whereby CO is protonated by the ortho σ-complex undergoing rapid inter- ring proton transfer to generate formyl cation in the vicinity of the ortho position leading to ortho regioselectivity.

Paracyclophane-10-enes and Paracyclophane-10,27-dienes: A Convenient Synthesis by the McMurry Reaction and Dynamic Stereochemistry

The 1,3-bis(4-acylphenyl)propanes 2, 3, 9, 12, and 15 were subjected to a cyclization by reductive coupling with low-valent titanium (McMurry reaction). 2 and 3 are converted into the corresponding 10,11-dialkylparacyclophane-10-enes 4 and 5, respect