New Syntheses of Diaza-Crown Ethers Using BOC Protecting Groups
BOC-protected m-xylylenediamine was treated with tetraethyleneglycol ditosylate to form BOC-protected diazabenzo-18-crown-5 (5) in a good yield.BOC-protected diazabenzo-21-crown-6 (6) was prepared in the same manner from BOC-protected m-xylenediamine and
Krakowiak, Krzysztof E.,Bradshaw, Jerald S.
p. 1639 - 1640
(2007/10/03)
Acceleration of Substitution Reactions of a Phosphoric Acid Diester by Bis(guanidinium) Compounds
Ion-pair coordination of phosphoric acid diesters with positively charged guanidines may cause large rate accelerations in substitution reactions.Here we present a comparative study on the catalytical influence of several mono- bis- and tris(guanidines) a
Gross, Ralf,Duerner, Gerd,Goebel, Michael W.
p. 49 - 58
(2007/10/02)
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