A Rapid Route to Aminocyclopropanes via Carbamatoorganozinc Carbenoids**

Studies on the Generation and Use of Functionalised Organozinc Carbenoids for the Synthesis of Aminocyclopropanes and Related Congeners

Modular Access to Azepines by Directed Carbonylative C–C Bond Activation of Aminocyclopropanes

A modular Rh-catalyzed entry to azepines is outlined. Under a CO atmosphere, protecting group directed C-C bond activation of aminocyclopropanes provides rhodacyclopentanones. These intermediates are effective for intramolecular C-H metalation of either an N-aryl or N-vinyl unit en route to azepine ring systems. Thus, byproduct-free heterocyclizations are enabled by sequential C-C activation an...

A rapid microwave route for the synthesis of ZnS nanoparticles

ZnS  nanoparticles  were  synthesized  via  a  simple  surfactant  free microwave  route.  In  this  synthesis, thioacetamide  was  used  as sulfur  source.  The effects  of different  parameters  such  as  type of zinc precursor,  time  and  power  of  irradiation  on  the  morphology and  particle  size  of  the  products  have been  investigated.  The nanostructures  were  characterized  by ...

Dearomatization of electron poor six-membered N-heterocycles through [3 + 2] annulation with aminocyclopropanes.

Many abundant and highly bioactive natural alkaloids contain an indolizidine skeleton. A simple, high yielding method to synthesize this scaffold from N-heterocycles was developed. A wide range of pyridines, quinolines and isoquinolines reacted with donor-acceptor (DA)-aminocyclopropanes via an ytterbium(iii) catalyzed [3 + 2] annulation reaction to give tetrahydroindolizine derivatives. The pr...

Synthesis and stability of Li/Cl carbenoids based on bis(iminophosphoryl)methanes.

The synthesis and stability of two bis(iminophosphoryl) substituted lithium chloride carbenoids with different N-substituents (tolyl and adamantyl) were examined. Their preparation was accomplished via the mild oxidation of the corresponding dilithio bis(iminophosphoryl) methandiides, BIPM(Tol) and BIPM(Ad), which are easily accessible by direct double deprotonation. In the case of the adamanty...