Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Samuel Braverman"'
Publikováno v:
ARKIVOC, Vol 2004, Iss 2, Pp 51-63 (2003)
Externí odkaz:
https://doaj.org/article/bbc643e2ba0e44bba603bb84e715a0ad
Autor:
Yulia Kalendar, Ranjan Jana, Israel Goldberg, Samuel Braverman, Milon Sprecher, M. Cherkinsky
Publikováno v:
Synthesis. 46:119-125
A convenient procedure for the synthesis of novel bis-(1-hydroxymethyl-2-halo-3-hydroxy-1-propylene) selenides has been developed. On oxidation these compounds form novel seleno-spiro compounds and their glutathione peroxidase mimetic activity has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77d756f1c5150494b358975d6c585f2f
https://doi.org/10.1055/s-0033-1338555
https://doi.org/10.1055/s-0033-1338555
Autor:
Milon Sprecher, M. Cherkinsky, Yuliya Kalendar, Samuel Braverman, Hugo E. Gottlieb, Arie Gruzman, Ella Meltzer Mats, Israel Goldberg
Publikováno v:
Journal of Physical Organic Chemistry. 26:102-108
The one-pot three-component preparation of novel selenium-containing spiroketals with potential biological activity is described. When in situ prepared selenium dichloride is reacted with either propargyl or homopropargyl alcohols in the presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed0cd7d49094ecc38c5ac820f9a0e6f7
https://doi.org/10.1002/poc.2952
https://doi.org/10.1002/poc.2952
Publikováno v:
Synthesis. 2011:1741-1750
Thirty-five substituted bis(propargyloxy) disulfides were successfully prepared in good to excellent yields, and their reactivity was found to be strongly dependent on the substitution pattern of the reactant. Inter alia they undergo surprising tande
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf97d5996b39365ac4194cc52df02234
https://doi.org/10.1055/s-0030-1260024
https://doi.org/10.1055/s-0030-1260024
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 186:1251-1254
A convenient method to incorporate selenium into an organic molecule is reported. Selenium halides undergo smooth 1,2-addition to the triple bond of various propargylic alcohols under mild reaction conditions and with complete regio- and stereospecif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64c0abd8c9fd0b714600e505277a5a05
https://doi.org/10.1080/10426507.2010.507731
https://doi.org/10.1080/10426507.2010.507731
Publikováno v:
Journal of Physical Organic Chemistry. 23:1114-1120
A convenient method to incorporate selenium into an organic molecule is reported. Various aspects of the reaction of SeCl2 with propargyl alcohols, i.e., identity of reacting functionality, regiospecificity, and stereospecificity, differ from expecta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2210d1b6fc78827276cf0896f3186f7b
https://doi.org/10.1002/poc.1729
https://doi.org/10.1002/poc.1729
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 114:51-60
The synthesis of thiophenes starting from allenyl sulfones, via intermediate formation of α,β-unsaturated sulfines, is described. The allenyl sulfones were synthesized by a [2,3]-sigmatropic rearrangement of appropriately substituted prop-2-ynyl su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b8061983de4ce16c4e56f8d3ff8a14d
https://doi.org/10.1002/recl.19951140203
https://doi.org/10.1002/recl.19951140203
Publikováno v:
Tetrahedron. 66:1925-1930
Synthesis and facile rearrangement and cyclization reaction of new dipropargylic disulfides are described. A possible mechanism for these transformations involving an initial double [2,3]-sigmatropic rearrangement to the elusive diallenyl disulfides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa64940ae67cca95e52877f99cfb8a22
https://doi.org/10.1016/j.tet.2010.01.012
https://doi.org/10.1016/j.tet.2010.01.012
Publikováno v:
Synlett. 2007:2663-2666
Symmetrical Z, Z-bis(1-hydroxymethyl-2-chlorovinyl) selenides have been obtained in high yields by regio- and stereo-specific addition of selenium dichloride to propargylic alcohols. Presumably, the hydroxyl group plays an important role in the -regi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65e029746ca1a396c05eb6fede5d1168
https://doi.org/10.1055/s-2007-991051
https://doi.org/10.1055/s-2007-991051
Publikováno v:
Tetrahedron Letters. 48:6713-6716
The synthesis and reactivity of diallenic α-disulfones and diallenic sulfinyl sulfones are described. Both types of compound exhibit enhanced reactivity relative to their saturated counterparts, and react spontaneously at low temperature, upon prepa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4620360ad25ea4799b66ec6339b6fecf
https://doi.org/10.1016/j.tetlet.2007.07.143
https://doi.org/10.1016/j.tetlet.2007.07.143