Two-step synthesis of boron-fused double helicenes

T Katayama, S Nakatsuka, H Hirai… - Journal of the …, 2016 - ACS Publications
Novel boron-fused double [5] helicenes were synthesized from hexabromobenzene in two
steps via Hart reaction and demethylative cyclization. The parent helicene shows excellent …

Benzo‐Fused Double [7] Carbohelicene: Synthesis, Structures, and Physicochemical Properties

Y Hu, XY Wang, PX Peng, XC Wang… - Angewandte Chemie …, 2017 - Wiley Online Library
Abstract A benzo‐fused double [7] carbohelicene (D7H) was synthesized through a
regioselective cyclodehydrogenation of a tetranaphthyl‐p‐terphenyl‐based precursor. The …

Asymmetric systematic synthesis, structures, and (chir) optical properties of a series of dihetero [8] helicenes

T Yanagi, T Tanaka, H Yorimitsu - Chemical Science, 2021 - pubs.rsc.org
A series of dihetero [8] helicenes have been systematically synthesized in enantiomerically
enriched forms by utilizing the characteristic transformations of the organosulfur functionality …

Symmetric multiple carbohelicenes

K Kato, Y Segawa, K Itami - Synlett, 2019 - thieme-connect.com
This account focuses on the synthesis and structures of symmetric multiple carbohelicenes;
ie, fully fused polycyclic aromatic hydrocarbons containing two or more symmetric helicene …

Efficient enantioselective synthesis of oxahelicenes using redox/acid cooperative catalysts

M Sako, Y Takeuchi, T Tsujihara, J Kodera… - Journal of the …, 2016 - ACS Publications
An efficient and enantioselective synthesis of oxa [9] helicenes has been established via
vanadium (V)-catalyzed oxidative coupling/intramolecular cyclization of polycyclic phenols …

Synthesis, structure, and chiroptical properties of a double [7] heterohelicene

XY Wang, XC Wang, A Narita, M Wagner… - Journal of the …, 2016 - ACS Publications
The synthesis of 11a, 25a-dibora-11, 12, 25, 26-tetraoxatetranaphtho [1, 2-a: 2′, 1′-f: 1 ″,
2 ″-j: 2‴, 1‴-o] perylene, a double [7] heterohelicene containing OBO units, has been …

Simultaneous control of central and helical chiralities: expedient helicoselective synthesis of dioxa [6] helicenes

P Liu, X Bao, JV Naubron, S Chentouf… - Journal of the …, 2020 - ACS Publications
An expedient synthesis of a new family of configurationally stable dioxa [6] helicenes was
established using a sequential helicoselective organocatalyzed heteroannulation …

Electrochemical Synthesis of Hetero[7]helicenes Containing Pyrrole and Furan Rings via an Oxidative Heterocoupling and Dehydrative Cyclization Sequence

MSH Salem, MI Khalid, M Sako… - Advanced Synthesis …, 2023 - Wiley Online Library
The electrochemical synthesis of hetero [7] helicenes including pyrrole and furan rings has
been established. A single electrochemical operation led to an oxidative heterocoupling and …

Helicene monomers and dimers: chiral chromophores featuring strong circularly polarized luminescence

C Schaack, L Arrico, E Sidler, M Górecki… - … A European Journal, 2019 - Wiley Online Library
The synthesis and chiroptical properties of a series of enantiomerically pure, C2‐
symmetrical carbo [6] helicene dimers are reported. Two helicene cores are connected …

Recent advances in the synthesis of dibenzofurans

M Alami, O Provot - Organic & Biomolecular Chemistry, 2024 - pubs.rsc.org
This review reports recent accesses to the dibenzofuran nucleus described in the literature
since 2008. This article starts with synthesizing dibenzofurans by creating the C O bond of …