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Synlett 1998; 1998(12): 1423-1425
DOI: 10.1055/s-1998-1989
DOI: 10.1055/s-1998-1989
letter
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Soluble Polymer-Supported Synthesis of N,N-di(Boc)-Protected Guanidines
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
![](https://www.thieme-connect.de/media/synlett/199812/lookinside/thumbnails/10.1055-s-1998-1989-1.jpg)
A novel method for soluble, inexpensive polymer-supported synthesis of internal guanidines with piperazine and piperidine scaffolds has been developed. We carried out a preliminary study on the reactivity of N,N-bis-Boc-1-guanylpyrazole 1, N,N-bis-Boc-thiourea 2 and N,N-di-(tert-butoxycarbonyl)-S-methylisothiourea 3 with resin bound diamines in liquid phase. Guanidines are liberated from the polymer support in high yields and good purity by simple precipitation and washing. This liquid-phase method proves to be a useful tool for constructing guanidine libraries containing a diamine moiety.
guanidine - combinatorial chemistry - liquid-phase method - solid-phase method - scaffold