π-Helicenes truncated to a minimum: access through a domino approach involving multiple carbopalladations and a Stille coupling

Autor:	Jörg Grunenberg, Martin Pawliczek, Peter G. Jones, Markus Leibeling, Bastian Milde, Daniel B. Werz
Rok vydání:	2014
Předmět:	Sequence Cascade reaction Terminal (electronics) Chain (algebraic topology) Chemistry Stereochemistry General Chemistry Optical rotation Catalysis Domino Stille reaction
Zdroj:	Angewandte Chemie (International ed. in English). 54(4)
ISSN:	1521-3773
Popis:	A novel type of π-helicenes is reported, in which the π-system is truncated to an all-s-cis all-Z oligoene chain. A domino sequence was developed, consisting of up to four consecutive carbopalladation reactions and a terminal Stille cross-coupling, to generate these entities in one step from the respective linear oligoynes. Despite the minimal π-system, very high optical rotation values were encountered for the single enantiomers. X-ray crystallography confirmed their screw-shaped structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b19bbea0c5c1396475f8a36c19a46c06 https://pubmed.ncbi.nlm.nih.gov/25530612 Zobrazit plný text záznamu Plný text