A process for the preparation of an alkylthiomethylphenol of the formula ##STR1## COMPRISING REACTING A DIALKYLAMINOMETHYLPHENOL OF THE FORMULA ##STR2## WITH A THIOCARBOXYLIC ACID S-ester of the formula ##STR3## in which R.sup.1 is optionally substituted alkyl with 1 to 12 carbon atoms or optionally substituted phenyl, R.sup.2 and R.sup.3 each independently is hydrogen, alkyl with 1 to 5 carbon atoms, halogen or nitro, or together form a benzene ring or cycloalkane ring with 3 to 5 carbon atoms which is fused to the phenyl ring, R.sup.4 and R.sup.5 each independently is alkyl with 1 to 6 carbon atoms, or together with the nitrogen atom form a five- or six-membered heterocyclic ring, R.sup.6 is hydrogen or alkyl with 1 to 6 carbon atoms, and n is 1, 2 or 3. The process may be carried out in a solvent, advantageously at a temperature from about 100.degree. to 150.degree. C, at about normal pressure using phenol as a catalyst with about 0.9 to 1.5 moles of thiocarboxylic acid S-ester per mole of dialkylaminomethylphenol.
Iodine-Mediated Direct Generation of <i>o</i>
-Quinone Methides at Room Temperature: A Facile Protocol for the Synthesis of <i>ortho</i>
-Hydroxybenzyl Thioethers
作者:R. Sidick Basha、Chia-Wei Chen、Daggula Mallikarjuna Reddy、Chin-Fa Lee
DOI:10.1002/asia.201800233
日期:2018.9.4
An iodine‐mediated preparation of ortho‐quinonemethides (o‐QMs) from ortho‐hydroxybenzylalcohols by a C−O bond scission strategy is described. The in situ generated o‐QMs were then employed for C−S bond formation by thio‐Michael addition of thiols to provide the ortho‐hydroxybenzyl thioethers (o‐HBT) in moderate to excellent yields.
In situ fluorescent labeling of highly volatile methylamine with 8-(4,6-dichloro-1,3,5-triazinoxy)quinoline
作者:Huimin Ma、Ute Jarzak、Wolfram Thiemann
DOI:10.1039/b101711j
日期:——
The first in situ fluorescent labeling probe for monitoring of highly volatile methylamine, 8-(4,6-dichloro-1,3,5-triazinoxy)quinoline, has been designed, synthesized and evaluated. The probe labels spectroscopically inert methylamine, causing a large change in fluorescence properties through suppression of the internal charge transfer, and thus can serve as an in situ labeling probe. This applicability has been demonstrated by measuring methylamine released during hydrolysis of N-methylcarbamates such as ethiofencarb.
N,N'-unsymmetrisch substituierte Thio-bis-amine, Verfahren zu ihrer Herstellung und ihre Verwendung als Insektizide, Akarizide und Nematozide
申请人:BAYER AG
公开号:EP0005780A1
公开(公告)日:1979-12-12
Die vorliegende Erfindung betrifft N,N'-unsymmetrisch substituierte Thio-bis-amine der allgemeinen Formel I
in welcher A2, R, R1, R2in die in der Beschreibung angegebene Bedeutung besitzen.
Man erhält sie, wenn man
a) Oxime der Formel
mit sulfenylierten Carbamoylhalogeniden der Formel
umsetzt, oder
b) gegebenenfalls die nach dem Verfahren (a) erhältlichen sulfenylierten Oximcarbamate der Formel
mit Verbindungen der Formel
umsetzt.
Die erfindungsgemäßen Verbindungen zeigen insektizide, akarizide und nematozide Wirkung.
Verfahren zur Herstellung von Alkyl- bzw. Arylthiomethyl-phenolen
申请人:BAYER AG
公开号:EP0011091A1
公开(公告)日:1980-05-28
Die vorliegende Erfindung betrifft ein neues Verfahren zur Herstellung von Alkyl- bzw. Arylthiomethylphenolen der Formel I
das dadurch gekennzeichnet ist, daß man Hydrooxymethylphenole der Formel II
mit Mercaptanen oder Thiophenolen bei Temperaturen von 20 bis 200 , gegebenenfalls in Anwesenheit eines Verdünnungsmittels umsetzt.
本发明涉及一种制备式 I 的烷基或芳基硫代甲基苯酚的新工艺,其特征在于:式 II 的氢氧基甲基苯酚是由烷基或芳基硫代甲基苯酚制备而成。
其特征在于:式 II 的羟甲基苯酚与硫醇或噻吩酚在 20℃、20℃、20℃ 和 20℃条件下反应。
与硫醇或噻吩酚反应,反应温度为 20 至 200℃,可选择在稀释剂存在下进行。