... Volume: Page: ... 5); (ii) the labile dibromodipyrromethane intermediate 7-α-Br can be prepared and used following simple workup; and (iii) the isolated yield of ... the reaction of ZnC-Br 7 T 10 and (triisopropylsilyl)acetylene in the presence of Pd 2 (dba) 3 and P(o-tol ...