Two binuclear copper(I) complexes with novel structures and novel bonding,Cu_2(Ph_2PCH_2PPh_2)Cl_2 (Ph_2PCH_2PPh_2=dppm) and Cu_2(Ph_2P-CH_2CH_2PPh_2)Cl_2 (Ph_
5-Hydroxymethylfurfuraldehyde(HMF)was prepared fromfructose or sucrose in high yield by using ZrCl_4 or Cp_2ZrCl_2 as thecatalyst under mild conditions.
5-Hyd