Tetrahedron letters

A novel solid-phase synthesis of cyclic guanidines

VY Vvedensky, BV Rogovoy, AS Kiselyov…

Index: Du Pont de Nemours and Co. Patent: US2569549 , 1949 ;

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Citation Number: 5

Abstract

... further acylated at the exocyclic nitrogen and cleaved with TFA to yield compound 10e containing an additional diversity point. ... Ph 3 P/CBr 4 , DMF, rt; (ii) m- or p-azidobenzoic acid, Cs 2 CO 3 , DMF ... 3; Pinto, DJ; Qiao, JX; Gungor, T.; Lam, PYS; Li, Y.-LUS Patent 2,004,209,863. ...