Highly Practical and General Synthesis of Monodisperse Linear π-Conjugated Oligoenynes and Oligoenediynes with Either trans- or cis-Olefin Configuration
journal contributionposted on 19.11.2003, 00:00 by Yuuki Takayama, Christophe Delas, Kenji Muraoka, Minoru Uemura, Fumie Sato
Efficient and practical synthesis of a variety of 1-iodo-4-(trimethylsilyl)but-1-en-3-yne derivatives 1 and 2 with trans- and cis-olefin configuration was described. Their repeated use as building blocks allowed the facile synthesis of trans- and cis-oligoenynes, respectively. Development of a highly practical method for preparing monodisperse trans- and cis-oligoenediynes having the effective conjugation length was also accomplished by using 5 and 4, which can be readily prepared from 1 and 2, respectively.