作者:Tim Lange、Jan-Dirk van Loon、Rik R. Tykwinski、Martin Schreiber、François Diederich
DOI:10.1055/s-1996-4249
日期:1996.4
Synthetic routes towards tetraethynylallene (4), a perethynylated modular entity for the construction of three-dimensional all-carbon networks and all-carbon backbone polymers with a stepladder or helical structure, are presented. They comprise propargylic rearrangements, cyclopropanations with carbenes, Peterson and Wittig-type olefinations, and alkylations of ketones with α-bromovinyl anions.