13707-86-3Relevant academic research and scientific papers
HOLOGRAPHIC RECORDING MATERIALS AND METHODS OF MAKING THE SAME
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Page/Page column 32; 35, (2021/12/31)
Provided herein are compositions suitable for recording holograms containing thiol and/or thioether functionality, and optionally including additional allyl and/or propargyl functional groups. These monomers can be used to synthesize holographic polymers having high Δn values. Also provided herein are methods of making holographic polymers and methods recording holograms using these polymers.
Synthesis and application of Cu(II) immobilized MCM-41 based solid Lewis acid catalyst for aminolysis reaction under solvent-free condition
Chaudhary, Garima,Gupta, Neha,Singh, Amit Pratap
, (2021/07/22)
In this paper, a Cu(II) immobilized periodic mesoporous organosilica (PMOs) was synthesized and used as a reusable solid Lewis acid catalyst for the aminolysis of epoxides under solvent-free conditions. An amide-based ligand, L-propylsilyl (1) having a specific binding pocket was prepared and fabricated on mesoporous MCM-41 to produce mesoporous organosilica L-propylsilyl@MCM-41 (2). Further, it has been utilized for anchoring Cu(II) ions under controlled reaction conditions to yield solid Lewis acid catalyst Cu(II)-L-propylsilyl@MCM-41 (3). The synthesized catalyst 3 exhibits significantly higher catalytic activity for aminolysis compared to hitherto known solid Lewis acid catalysts. An extensive range of β-amino alcohols with high regio and stereoselectivity were prepared by using catalyst 3. The catalyst was recovered easily and reused eight times without any loss in its catalytic activity. Furthermore, the synthesis of clinically significant propranolol (β-blocker) from α- naphthyl glycidyl ether was attained successfully using catalyst 3 in a very decent yield.
Amberlyst-15: An efficient heterogeneous reusable catalyst for selective anti-Markovnikov addition of thiols to alkenes/alkynes and for thiolysis of epoxides
Lanke, Satish R.,Bhanage, Bhalchandra M.
, p. 29 - 33 (2013/08/23)
The anti-Markovnikov addition of thiols to alkenes/alkynes and thiolysis of epoxides is described using Amberlyst-15 as a selective, commercially available, inexpensive and reusable catalyst. The products like diorganyl sulphides, β-hydroxy sulphides and phenyl(styryl)sulfanes were obtained in good to excellent yields in short reaction time and with high regio-selectivity. The catalyst was reused up to five consecutive recycles without any loss in its catalytic activity. The developed methodology is a metal free protocol for C-S bond formation reaction with high atom economy.
Recyclable superparamagnetic Fe3O4 nanoparticles for efficient catalysis of thiolysis of epoxides
Mojtahedi, Mohammad M.,Abaee, M. Saeed,Rajabi, Azam,Mahmoodi, Peyman,Bagherpoor, Saeed
experimental part, p. 68 - 71 (2012/08/07)
An efficient and rapid procedure is developed for room-temperature ring opening of various epoxides with thiols under solvent-free conditions in the presence of catalytic amount of superparamagnetic Fe3O4 nanoparticles. As a result,
Efficient synthesis of-Hydroxy sulfides and-Hydroxy sulfoxides catalyzed by Cu/MgO under solvent-free conditions
Das, Biswanath,Balasubramanyam, Penagaluri,Krishnaiah, Maddeboina,Veeranjaneyulu, Boyapati,Sudhakar, Dega
experimental part, p. 2113 - 2121 (2010/08/13)
Regio-, stereo-, and chemoselective ring opening of epoxides with thiols using Cu/MgO as a heterogeneous catalyst has efficiently been carried out to produce the corresponding β-hydroxy sulfides in excellent yields at room temperature under solvent-free c
(Bromodimethyl)sulfonium bromide-mediated thiolysis of epoxides: An easy access to -hydroxy sulfides and benzoxathiepinones in solvent-free conditions
Shailaja,Manjula,Rao, B. Vittal
experimental part, p. 3629 - 3639 (2011/02/22)
A mild, rapid and highly regioselective opening of epoxides by mercaptans to bη-hydroxy sulfides and benzoxathiepinones has been achieved in excellent yields, using catalytic amount of (bromodimethyl)sulfonium bromide in solvent free reaction conditions.
Rongalite promoted highly regioselective synthesis of β-hydroxy sulfides by ring opening of epoxides with disulfides
Guo, Wenxue,Chen, Jiuxi,Wu, Dengze,Ding, Jinchang,Chen, Fan,Wu, Huayue
experimental part, p. 5240 - 5243 (2009/11/30)
Rongalite promotes cleavage of disulfides generating thiolate anions that then undergo facile ring opening of epoxides in the presence of K2CO3 to afford α-addition products 3 with good to excellent yields. The important f
Additive-free thiolysis of epoxides in water: A green and efficient regioselective pathway to β-hydroxy sulfides
Abaee, Saeed M.,Mojtahedi, Mohammad M.,Abbasi, Hassan,Fatemi, Ensieh R.
, p. 282 - 289 (2008/03/17)
Room-temperature ring opening of various epoxides with aromatic thiols was carried out in water in the absence of any Lewis acid or additive. High yields of β-hydroxy sulfides with excellent regioselectivity were obtained under very environmentally friend
Highly regioselective ring opening of epoxides with thiols catalyzed by SbCl3 under solvent-free conditions
Ghazanfari, Dadkhoda,Hashemi, Mohammed M.,Akhgar, Mohammad Reza,Foroughi, Mohammad Mehdi,Najafi-Zadeh, Fariba
experimental part, p. 3018 - 3022 (2009/10/02)
The ring-opening reaction of epoxides with thiols by SbCl3 supported on Kieselguhr under solvent-free conditions, afforded high yields of β-hydroxy sulfides. Nucleophilic attack of the thiols occurs regioselectively at the less hindered side of the epoxid
Alumina-supported molybdenum (VI) oxide: An efficient and recyclable heterogeneous catalyst for regioselective ring opening of epoxides with thiols, acetic anhydride, and alcohols under solvent-free conditions
Singhal, Sweety,Jain, Suman L.,Sain, Bir
, p. 620 - 621 (2008/12/21)
An efficient and simple protocol for regioselective ring opening of epoxides with thiols, acetic anhydride, and alcohols using 16wt% MoO3 supported on alumina as a recyclable catalyst is described. Copyright
