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10.1021/jacs.5c18900 http://scihub22266oqcxt.onion/10.1021/jacs.5c18900 41319211!?!41319211 Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=41319211&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215       J+Am+Chem+Soc 2025 ; ? (?): ? Nephropedia Template TP {{tp|p=41319211|t=2025. Catalytic Enantioselective Synthesis of Planar-Chiral Cyclophanes via a Chiral Octahedral Cobalt(III)-Templated C-H Macrocyclization |pdf=|usr=}}{{41319211}} gab.com Text Catalytic Enantioselective Synthesis of Planar-Chiral Cyclophanes via a Chiral Octahedral Cobalt(III)-Templated C-H Macrocyclization JO: J Am Chem Soc http://www.kidney.de/pget.php?&tw=1&pmid=41319211 #FOAvip The catalytic enantioselective synthesis of planar-chiral cyclophanes is a formidable challenge due to the entropic and stereoelectronic constraints inherent in macrocyclization. Herein, we report a strategy that employs a cobalt(II) precatalyst with a chiral salicyloxazoline (Salox) ligand to direct the assembly of these architectures. This approach relies on a precise coordination assembly mediated by a chiral Salox-cobalt(III) complex, which templates linear precursors into cyclization-competent chiral conformations, mitigating the entropic penalty and ensuring exclusive facial selectivity. A range of 12- to 24-membered planar-chiral cyclophanes are obtained in good yields (up to 94%) with excellent enantioselectivities (93 to >99% ee) through enantioselective intramolecular C-H macrocyclization. This method also provides direct access to a novel class of crown ethers featuring planar-chiral cyclophane architectures, which serve as effective templates for the diastereoselective synthesis of mechanically planar-chiral rotaxanes. Furthermore, the representative fluorogenic cyclophanes exhibit strong circularly polarized luminescence, showcasing their potential for chiral photonic materials. Twit Text FOAVip Catalytic Enantioselective Synthesis of Planar-Chiral Cyclophanes via a Chiral Octahedral Cobalt(III)-Templated C-H Macrocyclization ????J Am Chem Soc http://www.kidney.de/pget.php?&tw=1&pmid=41319211 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=41319211 #FOAvip English Wikipedia <ref>{{Cite pmid|41319211}}</ref> Catalytic Enantioselective Synthesis of Planar-Chiral Cyclophanes via a Chiral Octahedral Cobalt(III)-Templated C-H Macrocyclization #MMPMID41319211 Wang BJ; Jiang TY; Jiang YL; Wu X; Yao QJ; Shi BF J Am Chem Soc 2025[Nov]; ? (?): ? PMID41319211show ga The catalytic enantioselective synthesis of planar-chiral cyclophanes is a formidable challenge due to the entropic and stereoelectronic constraints inherent in macrocyclization. Herein, we report a strategy that employs a cobalt(II) precatalyst with a chiral salicyloxazoline (Salox) ligand to direct the assembly of these architectures. This approach relies on a precise coordination assembly mediated by a chiral Salox-cobalt(III) complex, which templates linear precursors into cyclization-competent chiral conformations, mitigating the entropic penalty and ensuring exclusive facial selectivity. A range of 12- to 24-membered planar-chiral cyclophanes are obtained in good yields (up to 94%) with excellent enantioselectivities (93 to >99% ee) through enantioselective intramolecular C-H macrocyclization. This method also provides direct access to a novel class of crown ethers featuring planar-chiral cyclophane architectures, which serve as effective templates for the diastereoselective synthesis of mechanically planar-chiral rotaxanes. Furthermore, the representative fluorogenic cyclophanes exhibit strong circularly polarized luminescence, showcasing their potential for chiral photonic materials. ?Catalytic Enantioselective Synthesis of Planar-Chiral Cyclophanes via (epmc).pdf DeepDyve Pubget Overpricing