N,N’-Diiodo-N,N’-1,2-ethanediylbis(p-toluenesulfonamide) as a reagent for conversion of aldehydes to methyl esters

Poly(N-bromo-N-ethyl-benzene-1,3-disulfonamide), N,N,N′,N′-tetrabromobenzene-1,3-disulfonamide as new efficient reagents for conversion of alcohols to THP ethers and aldehydes to oxazoline compounds

“…As part of our ongoing project to study the application of poly(N-bromo-N-ethyl-benzene-1,3-disulfonamide) [PBBS] and N,N,N',N'-tetrabromobenzene-1,3-disulfonamide [TBBDA] [28][29][30][31][32][33] (Scheme 1), which is relatively easy to make [28] in organic synthesis, we now report a mild and efficient method for the conversion of alcohols to THP compounds (Scheme 2). Various aromatic and aliphatic alcohols were tetrahydropyranylated to THP compounds using TBBDA or PBBS in good to high yields under ambient conditions without any by-products.…”

Poly(N,N′-dibromo-N-ethyl-benzene-1,3-disulfonamide) and N,N,N′,N′- tetrabromobenzene-1,3-disulfonamide as effective catalysts for conversion of aldehydes to 1,1-diacetates and acetals

“…Our interest in the application of poly-(N,N'-dibromo-Nethyl-benzene-1,3-disulfonamide), [PBBS] and N,N,N',N'-tetrabromobenzene-1,3-disulfonamide [TBBDA] [35], in organic synthesis has been previously reported [31][32][33][34][35][36][37][38]. We now report a mild and efficient method for conversion of aldehydes to 1,1-diacetates, in the presence of TBBDA and PBBS with acetic anhydride.…”

A New and Facile Protocol for the Synthesis of Dithiocarbamate-linked 3,4-Dihydro-2H-pyran Using N-Halo Catalysts Under Mild Conditions Reaction

“…In a continuation of our interest in the application of N,N,N',N'-tetrabromobenzene-1,3-disulfonamide (TBBDA) and poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) (PBBS), 22 (Scheme 1), in organic synthesis, [23][24][25][26][27][28][29][30][31][32][33][34][35] we wish to report here a facile and improved protocol for preparation of dithiocarbamate derivatives, from amines, carbon disulfide (CS 2 ) and 3,4-dihydro-2H-pyran in the presence of TBBDA and PBBS as catalysts in EtOH/H 2 O at ambient conditions (Scheme 1).…”