107265-32-7

Basic information

• Product Name: 1,3-Propanedione, 1,3-bis(4-butoxyphenyl)-
• CAS NO: 107265-32-7
• Molecular Formula: C23H28O4
• Molecular Weight: 368.473
• Mol File: 107265-32-7.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 1,3-Propanedione, 1,3-bis(4-butoxyphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Propanedione, 1,3-bis(4-butoxyphenyl)-(107265-32-7)
• EPA Substance Registry System: 1,3-Propanedione, 1,3-bis(4-butoxyphenyl)-(107265-32-7)

Safety Data

• Hazardous Substances Data: 107265-32-7(Hazardous Substances Data)

Upstream product

• 99-93-4 4-Hydroxyacetophenone 
• 120-47-8 Ethyl 4-hydroxybenzoate 
• 5365-43-5 ethyl 4-butoxybenzoate 
• 5736-89-0 1-(4-butoxyphenyl)ethan-1-one 

Downstream Products

• 250374-47-1 [1,3-di(4-n-butoxyphenyl)propane-1,3-dionato]difluoroboron(III) 
• 443795-80-0 3,5-bis(4-butoxyphenyl)-1-(pyridin-2-yl)-1H-pyrazole 
• 152462-10-7 3,5-bis(4-(butyloxy)phenyl)-1H-pyrazole 

Relevant articles and documents

Chemistry of Rh(I) complexes based on mesogenic 3,5-disubstituted pyrazole ligands. X-ray crystal structures of 3,5-di(4-n-butoxyphenyl)pyrazole (Hpzbp2) and [Rh(μ-pzR2)(CO)2]2 (R = C6H4OCnH2n+1, n = 10, 12) compounds. Part II

Four new 3,5-disubstituted pyrazoles HpzR2 containing long-chain 4-n-alkyloxyphenyl substituents [R = C6H4OCnH2n+1; n=4 (1), 6 (2), 12 (5), 14 (6)] have been prepared and characterised. All of them showed mesomorphic behaviour,the stability and the range of the mesophases increasing with the length of the chain on the pyrazole. The X-ray structure of Hpzbp2 (1) showed a highly linear molecular shape. Related results were deduced for the remained HpzR2 and the structural consequences agree with the observed mesomorphic properties. The mesogenic pyrazoles HpzR2 (1-6) were used as ligands towards [RhCl(CO)2] and [Rh(CO)2] fragments. [RhCl(CO)2(HpzR2)] complexes (7-12) showed some physical properties dependant on the long-chained pyrazoles, and related to different molecular arrays in the solid state. In all cases these compounds evolved to [Rh(μ-pzR2)(CO)2]2 in solution. The pyrazolate Rh(I) complexes [Rh(μ-pzR2)(CO)2]2 (3-18) had the usual boat conformation, as deduced by the crystal structure of two of these derivatives [n =10 (16), 12 (17)]. The packing arrangement has both layer and columnar characteristics. No mesophases have been detected for any of the Rh(I) complexes.

First Examples Exhibiting both Double Melting Behavior and Mesomorphism in a Series of Long Chain Substituted Compounds: 1,3-Di(p-n-alkoxyphenyl)propane-1,3-dione

A new series of β-diketones substituted by the same kind of chains, (alkoxy groups) having different lengths (CnO-Diketone, n = 1-12), has been synthesized.It was found that CnO-Diketone shows triple melting behavior for n = 1, double melting behavior for n = 2-7, and smectic mesomorphism for n = 8-12.It is the first example exhibiting both double (triple) melting behavior and mesomorphism in a series of long chain substituted compounds, so far as we know.Furthermore, it is noteworthy that the critical change from double melting behavior to mesomorphism occurs between n = 7 and n = 8, which is also the first example in the long chain substituted compounds, so far as we know.Keywords: double melting behavior, smectic mesomorphism, long chain substituted compounds, β-diketone