Di-tert-butyl ketone hydrazone and di-tert-butyl ketone triphenylphosphoranylidenehydrazone
摘要:
Reaction of di-tert-butyl ketone with hydrazine hydrate gives di-tert-butyl ketone hydrazone, C9H20N2, which is dimerized by double hydrogen bonding in the solid state. Further reaction of this compound with dibromotriphenylphosphorane gives di-tert-butyl ketone triphenylphosphoranylidene-hydrazone, C27H33N2P, in the structure of which double chains parallel to the c axis are formed through weak C - H center dot center dot center dot pi and pi-pi stacking interactions. The hydrazone group is nearly planar in both cases. In the second compound, one of the aromatic rings is nearly coplanar with the hydrazone moiety, indicating possible pi-conjugation.
Synthesis and properties of monomeric selenoketones
作者:Thomas G. Back、Derek H. R. Barton、Michael R. Britten-Kelly、Frank S. Guziec
DOI:10.1039/c39750000539
日期:——
The preparation and reactions of di-t-butyl selenoketone (Ib) and of (–)-selenofenchone (IIb) are described; fenchylidenefenchane (VI) has been synthesised.