53907-46-3Relevant academic research and scientific papers
Synthesis of 2-[Mercapto(cyano)methylene]-1,2,3,4-tetrahydroquinazolin-4-ones and 2-Amino-4-methylpyrazolo-[1,5-a]quinazolin-5(4H)-one
Fleischer, Judit,Takacs, Kalman,Hermecz, Istvan
, p. 1251 - 1254 (1997)
A series of 2-[mercapto(cyano)methylene]-1,2,3,4-tetrahydroquinazolin-4-ones and 2-amino-4-methylpyrazolo[1,5-a]quinazolin-5(4H)-one were prepared from 2-cyanomethylquinazolin-4(3H)-ones via α-bromo derivatives 4 and amide oxime 8, respectively. The new compounds have been characterized by elemental analyses and 1H-nmr, in some cases by ir and 13C-nmr investigations.
A composition and use thereof (by machine translation)
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Paragraph 0079; 0083; 0084, (2019/10/02)
The invention discloses a composition and its application. The composition comprises: 1) mercapto compounds and ethylene multi-amine compound obtained by reaction of the product; and 2) mercapto compounds and ethylene multi-amine compounds to at least one. Tests show that: both the first containing mercapto compound with the multi-ethylene multi-amine compounds formed by the reaction of amide derivatives (composition) or added directly to the containing mercapto compound with the multi-ethylene multi-amine compounds have the amino compound on the Fmoc protecting group of with very rapid removal rate, and which can rapidly remove Fmoc protecting group formed of the arrest of the by-product [...], effectively improved [...] clearance rate, at the same time the composition with the addition of the [...] form has very good water-soluble, by simple washing can be by-product removal, thus obtaining high-purity amino compound. (by machine translation)
Transformation of the bromine end group into thiol in (Meth)acrylic polymers synthesized by atom transfer radical polymerization
Liras,Garcia,Quijada-Garrido,Paris
experimental part, p. 1335 - 1339 (2011/10/05)
The halogen end group of polymers prepared via atom transfer radical polymerization (ATRP) can be converted into other functional groups by different chemical modifications. Herein, a new method to modify the bromine end group into a thiol functionality in (meth)acrylic polymers synthesized by ATRP is reported for the first time. Thus, the bromine end group of several poly(methyl methacrylate)s was successfully converted into a thioacetate and then in a mercapto group by a controlled hydrolysis. This end-functionalization was confirmed introducing in situ a fluorescent group by thiol-ene "click" reaction with a synthetic alquene tethered to a 4,4-difluoro-4-bora-3a,4a- diaza-s-indacene (BODIPY) fragment. In addition, two model reactions in which bromide ATRP initiators were transformed into new thiol-functionalized molecules proved that this methodology can be applied to either methacrylic or acrylic polymers synthesized by ATRP.
Method for preparing mercaptopropionic acid esters
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, (2008/06/13)
A process is provided for the preparation of mercaptopropionic acid esters by reaction of an acrylic acid ester with hydrogen sulfide in the presence of a weakly basic amine as a catalyst, a polyether as a co-catalyst, a polythiodipropionic acid ester as a reactive solvent, and added elemental sulfur.
