A number of bile acid–peptide conjugates were synthesized and their hydrogelation properties were studied. These gels were used as scaffolds to in situ make Ag and Au nanoparticle–gel hybrids.

A urea-linked bile acid–amino acid conjugate was developed as a remarkable isomer-selective gelator for various disubstituted aromatic solvents. Polymorphism shown by the urea derivative was studied in detail which showed that only the amorphous polymorph acts as a gelator, but not the crystalline one.

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Bicyclic hydrazines undergo a facile palladium/iodine mediated stereoselective ring opening on reaction with organoboronic acids affording trans-3,4-disubstituted hydrazino cyclopentenes in good to excellent yield.

S y n t h e s i s o f 1 , 2 -O r t h o e s t e r s o f C a r b o h y d r a t e s i n I o n i c L i q u i d Abstract:A facile method for the synthesis of 1,2-orthoesters of carbohydrates in ionic liquid [bmim]PF 6 is described. The method described herein is simpler, eco-friendly and avoids the addition of quaternary ammonium salts as promoters.