1. 2-Bispyrroleethylenes can be easily syntnesized bv cc,-,pt}ngpyrrolealdehyde using TiCl<sub>4</sub>/Zn as a catalyst. It was found that when theR group is CO
Oxiranes as well as four and five membered rings of cyclic ethers were cleavedwith acyl chloride in the presence of samarium trichloride or Eu(hfe)<sub>3</sub> as