- N-BH3 ADDUCTS OF TRIALKYL-1,3,5-TRIAZACYCLOHEXANES WITH STABLE STEREOGENIC NITROGEN ATOMS, STEREOCHEMICAL STUDY
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The syntheses and stereochemical studies of N-BH3 adducts of trialkyl-1,3,5-triazacyclohexanes are reported.Different reagent ratios were used in order to obtain mono- and di-N-borane adducts.Tri-N-borane adducts were never observed; di-N-borane adducts were formed with triazine 1 and 2 whereas 3 and 4 afforded only the mono-boranes.It appears that low steric strain is an important factor in the syntesis of these compounds.Borane addition produced in all cases ring and nitrogen conformationally stable compounds which were studied by NMR All the reactions were 100percent stereoselective affording one isomer in each reaction.
- Martinez-Aguilera, Luz M. Ruth,Cadenas-Pliego, Gregorio,Contreras, Rosalinda,Flores-Parra, Angelina
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Read Online
- Catalyst for curable compositions containing hexahydrotriazine structural units
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A compound containing at least one hexahydrotriazine unit of formula (I) having at least one amidine or guanidine group and to the use thereof as a catalyst for the crosslinking of a functional compound, in particular a polymer including silane groups. The compound contains at least one hexahydrotriazine unit of formula (I) is producible in a simple process from readily available feedstocks, odorless at room temperature, non-volatile and largely non-toxic. The compound accelerates the crosslinking of functional polymers surprisingly well and by simple variation of the substituents is variable such that it has very good compatibility in different polymers as a result of which such compositions do not have a propensity for migration-based defects such as separation, exudation or substrate contamination.
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Page/Page column 39
(2021/08/26)
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- Synthesis and Crystal Structure of Dipotassium Salts of N-Alkyl-N-{[O-alkoxy(hydroxy)phosphoryl]methyl}ditiocarbamic Acids
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Abstract: A one-pot method for the synthesis of dipotassium salts of N-alkyl-N-{[O-alkoxy(hydroxy)phosphoryl]methyl}dithiocarbamic acids has been elaborated. Dipotassium salts of N-isopropyl-, N-butyl-, and N-cyclohexyl-N-{[hydroxy(O-ethoxy)phosphoryl]methyl}dithiocarbamic acids as well as N-{[O-butoxy(hydroxy)phosphoryl]methyl}-N-(2-methoxyethyl)dithiocarbamic acid have been synthesized and isolated. Crystal and molecular structure of the latter compound have been elucidated.
- Garifzyanov, A. R.,Islamov, D. R.,Mirzayanov, I. I.,Shtyrlin, V. G.
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p. 381 - 384
(2020/04/27)
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- Iridium-catalyzed 1,5-(aryl)aminomethylation of 1,3-enynes by alkenyl-to-allyl 1,4-iridium(i) migration
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A novel multicomponent coupling reaction involving the iridium-catalyzed 1,5-difunctionalization of 1,3-enynes with arylboronic acids and triazinanes is described. A key step in this 1,5-(aryl)aminomethylation reaction is the alkenyl-to-allyl 1,4-iridium(i) migration.
- Ruscoe, Rebecca E.,Callingham, Michael,Baker, Joshua A.,Korkis, Stamatis E.,Lam, Hon Wai
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supporting information
p. 838 - 841
(2019/01/21)
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- Facile Access to 3-Unsubstituted Tetrahydroisoquinolonic Acids via the Castagnoli-Cushman Reaction
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Hitherto undescribed 3-unsubstituted tetrahydroisoquinolonic acids (isolated as their respective methyl esters) were accessed for the first time by the uncatalyzed, thermally promoted Castagnoli-Cushman reaction (CCR) of homophthalic anhydride (HPA) and a series of 1,3,5-triazinanes. The moderate yields observed in some cases are most likely associated with a persistent impurity also formed in these reactions. The new scaffold is expected to find novel medicinal utility (compared to the traditional CCR adducts) because it lacks a substituent at the 3-position.
- Guranova, Natalia,Dar'In, Dmitry,Krasavin, Mikhail
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p. 2001 - 2008
(2018/03/06)
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- Synthesis of N-substituted 1,3,5-triazacyclohexanes catalyzed by starch sulfuric acid
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N-substituted 1,3,5-triazacyclohexanes were simply synthesized from the reaction of aromatic or fatty amines and formaldehyde catalyzed by recyclable starch sulfuric acid with good yields at room temperature.
- Wu, Hui,Yuan, Rui,Wan, Yu,Yin, Wei,Pang, Li-Ling
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experimental part
p. 1097 - 1102
(2012/03/11)
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- CYCLIC COMPOUND, PROCESS FOR PRODUCING THE SAME, AND PEST CONTROL AGENT
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A compound represented by the formula: wherein, A represents a group represented by the formula: CY1Y2OCY3Y4, CY1Y2SOnCY3Y4, CY1Y2NRCY3Y4, CY1=NCY3Y4 or CY1Y2N=CY3 (wherein n is 0, 1, or 2, and Y1, Y2, Y3, and Y4 each independently represents hydrogen, alkyl, or haloalkyl); R represents hydrogen, halogen, an optionally substituted hydrocarbon group, etc.; Q1 represents substituted phenyl or a substituted aromatic heterocyclic group; and Q2 represents substituted phenyl, alkyl, or haloalkyl, or a salt. thereof; a process for producing the. compound or a salt thereof; and an insecticide containing. the same. Besides being applicable by spraying, the insecticide can be used for soil treatment and seed treatment.
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- REACTIONS OF DICHLOROMETHANE WITH THIOANIONS. 2. FORMATION OF 5-ALKYL-1,3,5-DITHIAZINANES, 3,5-DIALKYL-1,3,5-THIADIAZINANES, AND 1,3,5-TRIALKYL-1,3,5-TRIAZINANES BY REACTION OF DICHLOROMETHANE WITH SODIUM SULFIDE AND MONOALKYLAMINES
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The reaction of dichloromethane with sodium sulfide and monoalkylamines, catalyzed by polyethyleneglycol 1,500, is studied.A mixture of 5-alkyl-1,3,5-dithiazinane, 3,5-dialkyl-1,3,5-thiadiazinane, and 1,3,5-trialkyl-1,3,5-triazinane is obtained.The proportion of these heterocycles depends on the amine structure and the presence of sodium hydroxide. - Key words: 5-Alkyl-1,3,5-dithiazinanes; 3,5-dialkyl-1,3,5-thiadiazinanes; dichloromethane double substitution; polyethyleneglycol as catalyst
- Torres, Martin,Vega, Juan C.
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p. 125 - 130
(2007/10/03)
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- SYNTHESE D'IMINES LINEAIRES NON-STABILISEES PAR REACTIONS GAZ-SOLIDE SOUS VIDE(1).
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Unstabilized imines are synthetized in gram-scale by vacuum dehydrochlorination of N-chloroalkylamines and by vacuum dehydrocyanation of α-aminonitriles on solid base.All the new compounds are characterized at low temperature by 1H, 13C NMR and IR spectroscopy.
- Guillemin, Jean-Claude,Denis, Jean-Marc
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p. 4431 - 4446
(2007/10/02)
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