Mg in tetrahydrofuran addn. of dimesitylfluoroborane to a Grignard soln., prepared from 1,3-dibromobenzene and Mg in THF, refluxing for to days; chromy. on SiO2;

Mg in tetrahydrofuran addn. of dimesitylfluoroborane to a Grignard soln., prepared from 1,3,5-tribromobenzene and Mg in THF, refluxing for to days; chromy. on SiO2;

in not given