19193-93-2Relevant academic research and scientific papers
A new simple synthesis of 3,5-disubstituted 1-amino-1,3,5-triazine- 2,4,6-triones from ethoxycarbonylhydrazones and isocyanates
Chau,Malanda,Milcent
, p. 261 - 263 (1998)
The 3,5-disubstituted 1-amino-1,3,5,-triazine-2,4,6-triones were synthesized in good yields from aromatic aldehyde or ketone ethoxycarbonylhydrazones by treatment with aryl or methyl isocyanates in boiling triethylamine followed by hydrolysis with hydrochloric acid solution.
Fast cyclotrimerization of a wide range of isocyanates to isocyanurates over acid/base conjugates under bulk conditions
Cheng, Ruihua,Liu, Wei,Wu, Li,Ye, Jinxing
, (2020/07/06)
An array of organic bases DMAP (4-dimethylaminopyridine), DBU (1, 8-diazabicyclo [5.4.0] undec-7-ene), TBD (1, 5, 7-triazabicyclo [4.4.0] dec-5-ene), and their base/acid conjugate organocatalyst systems were evaluated in the trimerization of various isocyanates. The performance depended greatly on the combination of the catalyst systems, and the [HTBD][OAc] (acetic acid) catalyst systems were considerably the most active in contrast to the corresponding DMAP and DBU counterparts. The [HTBD][OAc] catalyst system was capable of providing isocyanurates from the cyclotrimerization of various isocyanate substrates in excellent yields in seconds even under bulk conditions. A bifunctional catalytic mechanism over [HTBD][OAc] was proposed.
Yttrium dialkyl supported by a silaamidinate ligand: Synthesis, structure and catalysis on cyclotrimerization of isocyanates
Liu, Deshuai,Zhou, Dahai,Yang, Hao,Li, Jianfeng,Cui, Chunming
supporting information, p. 12324 - 12327 (2019/10/19)
A sterically demanding silaamidine (ArN = Si(L)NHAr) ligand was synthesized and employed for the preparation of a yttrium dialkyl complex, which catalytically enabled the cyclotrimerization of isocyanate with high activity and excellent functional group t
Isocyanurate Formation During Oxazolidinone Synthesis from Epoxides and Isocyanates Catalysed by a Chromium(Salphen) Complex
Wu, Xiao,Mason, Jess,North, Michael
, p. 12937 - 12943 (2017/09/25)
Chromium(salphen) complex 10 is found to be a catalyst for the preparation of oxazolidinones from epoxides and isocyanates. Using the optimal reaction conditions (1.5 mol % of chromium(salphen) complex 10 at 80 °C in toluene for 4 hours), six epoxides wer
Triaryl-1,3,5-triazinane-2,4,6-triones (Isocyanurates) peripherally functionalized by donor groups: Synthesis and study of their linear and nonlinear optical properties
Argouarch, Gilles,Veillard, Romain,Roisnel, Thierry,Amar, Anissa,Boucekkine, Abdou,Mongin, Olivier,Paul, Frederic,Meghezzi, Hacene,Hugues, Vincent,Blanchard-Desce, Mireille
, p. 11811 - 11827,17 (2012/12/12)
The linear optical (LO) and nonlinear optical (NLO) properties of a series of isocyanurates functionalized by donor arms at the periphery are reported herein. These octupolar derivatives were obtained in a straightforward way from commercial isocyanate de
Donor-substituted triaryl-1,3,5-triazinanes-2,4,6-triones: Octupolar NLO-phores with a remarkable transparency-nonlinearity trade-off
Argouarch, Gilles,Veillard, Romain,Roisnel, Thierry,Amar, Anissa,Boucekkine, Abdou,Singh, Anu,Ledoux, Isabelle,Paul, Frederic
experimental part, p. 2409 - 2411 (2012/01/04)
We report in this letter the measurement of the hyperpolarizabilities of a series of donor-substituted triaryl-1,3,5-triazinanes-2,4,6-triones by hyper Rayleigh scattering (HRS). A remarkable transparency-nonlinearity trade-off is evidenced for these octu
An electron-rich proazaphosphatrane for isocyanate trimerization to isocyanurates
Raders, Steven M.,Verkade, John G.
experimental part, p. 5308 - 5311 (2010/10/19)
(Figure presented) A facile synthesis of the new electron-rich, sterically hindered proazaphosphatrane shown above is described herein. This proazaphosphatrane catalyzes the cyclotrimerization of a wide variety of isocyanates to isocyanurates under mild c
