TOWARD POLYPHOSPHOLES - SYNTHESIS AND STRUCTURE OF AN ALPHA-LINKED QUATERPHOSPHOLE

By simple bromine–lithium exchange a 2,5‐dibromophosphole is converted into the corresponding 2‐lithio derivative. This opens a new route to difunctionalized biphospholes (which are interesting in their own right as building blocks for synthesis) and to the unprecedented, α‐linked quaterphosphole 1. (Figure Presented.) Copyright © 1994 by VCH Verlagsgesellschaft mbH, Germany