PMID- 35530498 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220510 IS - 2046-2069 (Electronic) IS - 2046-2069 (Linking) VI - 9 IP - 48 DP - 2019 Sep 3 TI - Selective Wacker type oxidation of a macrocyclic diene to the corresponding monounsaturated ketone used as fragrance. PG - 27865-27873 LID - 10.1039/c9ra04971a [doi] AB - A selective reaction method for the efficient conversion of an isomeric mixture of 1,9-cyclohexadecadiene (1,9-CHDD) to the corresponding monounsaturated cyclohexadec-8-en-1-one (8-CHD) is described. 8-CHD was synthesized via Wacker type oxidation at room temperature using a highly electrophilic in situ formed dicationic palladium species. Isomerisation of the diene and over-oxidation of the substrate could be nearly suppressed by suitable reaction control, which has a positive effect on selectivity. The utilization of molecular oxygen as a green oxidant and environmentally benign iron(iii) salts as co-catalysts was successfully applied. This reaction strategy is promising to overcome the low overall reactivity of internal olefins in Wacker type oxidations. In addition, larger scale experiments showed further potential for industrial application. CI - This journal is (c) The Royal Society of Chemistry. FAU - Brunzel, Tom AU - Brunzel T AUID- ORCID: 0000-0002-9566-2722 AD - Leibniz Institute for Catalysis at the University of Rostock Albert-Einstein-Strasse 29a 18059 Rostock Germany angela.koeckritz@catalysis.de. FAU - Heppekausen, Johannes AU - Heppekausen J AD - Symrise AG Muhlenfeldstrasse 1 37603 Holzminden Germany. FAU - Panten, Johannes AU - Panten J AD - Symrise AG Muhlenfeldstrasse 1 37603 Holzminden Germany. FAU - Kockritz, Angela AU - Kockritz A AD - Leibniz Institute for Catalysis at the University of Rostock Albert-Einstein-Strasse 29a 18059 Rostock Germany angela.koeckritz@catalysis.de. LA - eng PT - Journal Article DEP - 20190904 PL - England TA - RSC Adv JT - RSC advances JID - 101581657 PMC - PMC9070781 COIS- There are no conflicts to declare. EDAT- 2019/09/04 00:00 MHDA- 2019/09/04 00:01 PMCR- 2019/09/04 CRDT- 2022/05/09 04:23 PHST- 2019/07/01 00:00 [received] PHST- 2019/08/24 00:00 [accepted] PHST- 2022/05/09 04:23 [entrez] PHST- 2019/09/04 00:00 [pubmed] PHST- 2019/09/04 00:01 [medline] PHST- 2019/09/04 00:00 [pmc-release] AID - c9ra04971a [pii] AID - 10.1039/c9ra04971a [doi] PST - epublish SO - RSC Adv. 2019 Sep 4;9(48):27865-27873. doi: 10.1039/c9ra04971a. eCollection 2019 Sep 3.