1
|
Bao J, Kang KS, Molineux J, Bischoff DJ, Mackay ME, Pyun J, Njardarson JT. Dithiophosphoric Acids for Polymer Functionalization. Angew Chem Int Ed Engl 2024; 63:e202315963. [PMID: 38225715 DOI: 10.1002/anie.202315963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Indexed: 01/17/2024]
Abstract
Dithiophosphoric acids (DTPAs) are an intriguing class of compounds that are sourced from elemental sulfur and white phosphorus and are prepared from the reaction of phosphorus pentasulfide with alcohols. The electrophilic addition of DTPAs to alkenes and unsaturated olefinic substrates is a known reaction, but has not been applied to polymer synthesis and polymer functionalization. We report on the synthesis and application of DTPAs for the functionalization of challenging poly-enes, namely polyisoprene (PI) and polynorbornene (pNB) prepared by ring-opening metathesis polymerization (ROMP). The high heteroatom content within DTPA moieties impart intriguing bulk properties to poly-ene materials after direct electrophilic addition reactions to the polymer backbone introducing DTPAs as side chain groups. The resulting materials possess both enhanced optical and flame retardant properties vs the poly-ene starting materials. Finally, we demonstrate the ability to prepare crosslinked polydiene films with di-functional DTPAs, where the crosslinking density and thermomechanical properties can be directly tuned by DTPA feed ratios.
Collapse
Affiliation(s)
- Jianhua Bao
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721, USA
| | - Kyung-Seok Kang
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721, USA
| | - Jake Molineux
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721, USA
| | - Derek J Bischoff
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Michael E Mackay
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Jeffrey Pyun
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721, USA
| | - Jon T Njardarson
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721, USA
| |
Collapse
|
2
|
Properzi R, Kaib PSJ, Leutzsch M, Pupo G, Mitra R, De CK, Song L, Schreiner PR, List B. Catalytic enantiocontrol over a non-classical carbocation. Nat Chem 2020; 12:1174-1179. [PMID: 32989271 DOI: 10.1038/s41557-020-00558-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 08/21/2020] [Indexed: 12/28/2022]
Abstract
Carbocations can be categorized into classical carbenium ions and non-classical carbonium ions. These intermediates are ubiquitous in reactions of both fundamental and practical relevance, finding application in the petroleum industry as well as the discovery of new drugs and materials. Conveying stereochemical information to carbocations is therefore of interest to a range of chemical fields. While previous studies targeted systems proceeding through classical ions, enantiocontrol over their non-classical counterparts has remained unprecedented. Here we show that strong and confined chiral acids catalyse enantioselective reactions via the non-classical 2-norbornyl cation. This reactive intermediate is generated from structurally different precursors by leveraging the reactivity of various functional groups to ultimately deliver the same enantioenriched product. Our work demonstrates that tailored catalysts can act as suitable hosts for simple, non-functionalized carbocations via a network of non-covalent interactions. We anticipate that the methods described herein will provide catalytic accessibility to valuable carbocation systems.
Collapse
Affiliation(s)
- Roberta Properzi
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Philip S J Kaib
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Gabriele Pupo
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Raja Mitra
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany.,School of Chemical and Biological Sciences, IIT Goa, Ponda, India
| | - Chandra Kanta De
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Lijuan Song
- Institute of Organic Chemistry, Justus Liebig University, Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Giessen, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany.
| |
Collapse
|
3
|
Arisawa M, Ichikawa T, Yamaguchi M. Synthesis of thiiranes by rhodium-catalyzed sulfur addition reaction to reactive alkenes. Chem Commun (Camb) 2015; 51:8821-4. [DOI: 10.1039/c5cc01570g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium complex derived from RhH(PPh3)4, dppe, and 4-ethynyltoluene catalyzes the addition reaction of sulfur to norbornenes giving the corresponding thiiranes under acetone reflux conditions. The rhodium complex effectively transfers a sulfur atom to the double bond from sulfur, and exo-adducts are obtained.
Collapse
Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| | - Takuya Ichikawa
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| |
Collapse
|
4
|
Borovika A, Nagorny P. Chiral Brønsted acid-catalyzed enantioselective ionic [2+4] cycloadditions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
5
|
Han X, Wu J. Ga(OTf)3-Catalyzed Direct Substitution of Alcohols with Sulfur Nucleophiles. Org Lett 2010; 12:5780-2. [DOI: 10.1021/ol102565b] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xinping Han
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Jimmy Wu
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| |
Collapse
|
6
|
Murai T, Monzaki M, Katoh T, Suzuki T, Akiyama T. Synthesis and Properties of Phosphoroselenoic Acids and Their salts Bearing Binaphthyl Groups. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426501003771575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Toshiaki Murai
- a Department of Chemistry, Faculty of Engineering , Gifu University , Gifu, Japan
| | - Masaki Monzaki
- a Department of Chemistry, Faculty of Engineering , Gifu University , Gifu, Japan
| | - Takuya Katoh
- b Department of Chemistry, Faculty of Science , Gakushuin University , Tokyo, Japan
| | - Tohru Suzuki
- b Department of Chemistry, Faculty of Science , Gakushuin University , Tokyo, Japan
| | - Takahiko Akiyama
- b Department of Chemistry, Faculty of Science , Gakushuin University , Tokyo, Japan
| |
Collapse
|
7
|
Murai T, Monzaki M, Shibahara F. Synthesis of 1,1′-Binaphthyl-2,2′-diyl Phosphoroselenoic Ammonium Salts and Their Conversion to Optically Active Dialkyl Diselenides. CHEM LETT 2007. [DOI: 10.1246/cl.2007.852] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
8
|
Candela K, Fellous R, Joulain D, Faure R. Reduction ofcis- andtrans-1,2-epithio-p-menth-8-ene: preparation of new fragrant terpenoid thiols. FLAVOUR FRAG J 2003. [DOI: 10.1002/ffj.1153] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
9
|
Delogu G, Fabbri D, Dettori MA, Capozzi G, Menichetti S, Nativi C. Desymmetrization of 2,2′,6,6′-tetramethoxybiphenyl by regioselective sulfenylation reaction. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(02)00012-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
10
|
Nishide K, Shiraki H, Tamakita H, Node M. Use of odorless thiols: formal asymmetric Michael addition of hydrogen sulfide to alpha-substituted alpha,beta-unsaturated carbonyl compounds. Org Lett 2001; 3:3121-4. [PMID: 11574010 DOI: 10.1021/ol016406d] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The Michael addition to alpha-substituted alpha,beta-unsaturated esters and amides using complex A containing a chiral odorless thiol proceeded diastereoselectively. The Michael adducts were converted to beta-mercapto esters and amides via a Wagner-Meerwein rearrangement with boron trifluoride etherate and a thiol exchange reaction using odorless 1-dodecanethiol. This conversion constitutes a formal asymmetric Michael addition of hydrogen sulfide to alpha,beta-unsaturated carbonyl compounds using odorless thiols instead of the toxic hydrogen sulfide.
Collapse
Affiliation(s)
- K Nishide
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8414, Japan
| | | | | | | |
Collapse
|
11
|
de March P, Figueredo M, Font J, González L, Salgado A. Two new chiral equivalents of H2S: a thio- and a dithiocarboxylic acid. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00334-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
12
|
Diana MB, Marchetti M, Melloni G. Enantioselective synthesis of thiols by thione-thiol rearrangement catalyzed by optically active pyridine N-oxides. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00143-d] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Haché B, Gareau Y. Free-radical addition to olefins of an H2S equivalent: Triphenylsilanethiol. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)73174-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|