The reactive intermediate generated by the addition of tert-butyl and 1,1,3,3-tetramethyl butyl isocyanide and cyclohexyl isocyanide to dialkyl acetylenedicarboxylate was trapped by 3-hydroxy pyridine to produce highly functionalized 4H-chromenes in fairly good  yields.

Simple three-component reactions between dialkyl acetylenedicarboxylate, primary amines and isothiocyanates in the presence of catalytic amount of ZnO nanorods are investigated in water at room temperature which produced thiazole derivatives in good yields.

Michael addition reactions of morpholine and benzylamine to methyl 2,3-dideoxy-4,6-0-(phenylmethylene)-3-Cphenylsulfonyl-a-D-erythro-hex-2-enopyranoside 9 furnish glucoderivatives 10 and 11. Desulfonation at C-3 followed by synthetic manipulation produces intermediates for generating various new modified monosaccharides carry ing N-alkyl and N,N-dialkyl amino groups at the C-2 position of hexop...

A b s t r w A series of blends at molecular level dispersion between an organic polymer and metal oxide (mainly silica) are described. These blends are called "organicinorganic polymers hybrids". The dimension of dispersion of "hybrids" is much smaller than that of the so-called "composites". The most suitable organic polymers for the formation of hybrids are those which consist of repeating un...