Mabin M, Elliott Q, Wang Z, Ugrinov A, Chu QR. A Biorenewable Cyclobutane-containing Building Block Synthesized from Sorbic Acid Using Photoenergy.
iScience 2022;
25:105020. [PMID:
36117986 PMCID:
PMC9475318 DOI:
10.1016/j.isci.2022.105020]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/14/2022] [Accepted: 08/19/2022] [Indexed: 11/30/2022] Open
Abstract
A novel cyclobutane-containing diacid building block, CBDA-3, was synthesized from sorbic acid using clean, efficient [2 + 2] photocycloaddition. This photoreaction can be performed using commercially available germicidal lamps, which represent a form of ECO-UV. SC-XRD showed that the cyclobutane ring in CBDA-3 has a unique semi-rigid character, unlike more rigid aromatic rings or more flexible types of aliphatic rings. C=C bonds present in the structure of CBDA-3 provide opportunities for derivatization which could be used to alter the characteristics of polymers made from this monomer. Additionally, TGA and DSC analysis showed CBDA-3 to have excellent thermal stability. These characteristics make CBDA-3 a promising building block with the potential to be used as a sustainable alternative to traditional petroleum-derived diacids. Finally, a facile and reliable Fischer esterification of CBDA-3 was performed to tune its melting point and solubility for different applications and to demonstrate the applicability of this building block in polymer synthesis.
A novel cyclobutane-containing diacid building block
A potentially sustainable alternative to petroleum-derived diacids
Photoreaction using ECO-UV (Energy-efficient, Cost-effective, and Operator-friendly)
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