Reduction of acid chlorides using dichloro bis[(1,4-diaza bicyclo [2.2.2] octane) bis(tetrahydroborato)] zirconium (IV)

Aliphatic and aromatic acid chlorides were efficiently reduced to give the corresponding alcohols when treated with [Zr(BH4)2Cl2(dabco)2], (ZrBDC).

Preparation of N-alkyl-substituted 3,5-dinitroanilines by amination of 1,3,5-trinitrobenzene

Highly efficient amination of 1,3,5-trinitrobenzene by a number of simple aliphatic amines to form the corresponding N-alkyl-substituted 3,5-dinitroanilines has been achieved.

Direct, two-step synthetic pathway to novel dibenzo[a,c]phenanthridines

Novel dibenzo[a,c]phenanthridines are prepared regioselectively by the application of a straightforward synthetic pathway, starting from new 3,4-diaryl- and 3,4-dihydro-3,4-diarylisoquinolines prepared via Ritter-type heterocyclization and the more classical two-step reductive amination/Bischler-Napieralski cyclization of triarylethanones, respectively. A comparative study of nonphenolic oxidative coupling methodologies provides a highly efficient procedure, based on the hypervalent iodine reagent phenyliodine(III) bis(trifluoroacetate) (PIFA), to accomplish the final coupling step.