- Gram Scalable Method to Synthesize Biscarbodiimides and Asymmetric Monocarbodiimides: A Platform to Access an Array of Phosphaguanidines, Amidines, and Guanidines
-
A mild, broadly functional group tolerant methodology has been developed to access a variety of mono- and bis-carbodiimides in good yield and high purity on multigram scale. Direct addition into these versatile motifs facilitated the rapid synthesis of a library of novel amidinines, guanidines, and phosphaguandines.
- Bailey, Brad,Camelio, Andrew M.,Davis, Anna,Krasovskiy, Arkady
-
-
- Pos [...] 4 group metal olefin polymerization catalyst
-
Embodiments are directed to phosphaguanidine metal complexes of formula I and using those complexes in α-olefin polymerization systems.
- -
-
-
- Bis connected to first metal complex III and IV [...] produced from olefin polymerization catalyst
-
Embodiments are directed to monophosphaguanidine ligands and the bis ligated metal-complexes formed therefrom, wherein the metal-ligand complexes are polymerization catalysts comprising the following structure (I).
- -
-
-
- Oxidation of Mixtures of Thioureas: Part VII - Formation of 4-Alkyl-5-alkylimino-3-amino-4,5-dihydro-1,2,4-thiadiazoles
-
Oxidation of acidic ethanolic solutions of binary mixtures of 1,3-diethyl, 1,3-di-n-propyl, 1,3-diisopropyl, 1,3-di-n-butyl, 1,3-dibenzyl, 1-benzyl-3-methyl, 1-benzyl-3-ethyl, 1-benzyl-3-n-propyl, 1-benzyl-3-n-butyl, 1-n-butyl-3-n-propyl-thioureas with thiourea has been found to yield the related 4-alkyl-5-alkylimino-3-amino-4,5-dihydro-1,2,4-thiadiazoles (3).The mechanism of formation of these thiadiazoles has been discussed.One of the intermediates, viz. bis(formamidino)sulphide salt has been alternatively prepared and its further reactions studied.
- Indukumari, P. V.,Joshua, C. P.
-
p. 667 - 671
(2007/10/02)
-