Organic electrochemistry has emerged
as an enabling and sustainable
technology in modern organic synthesis. Despite the recent renaissance
of electrosynthesis, the broad adoption of electrochemistry in the
synthetic community, and especially in industrial settings, has been
hindered by the lack of general, standardized platforms for high-throughput
experimentation (HTE). Herein, we disclose the design of the HT
e
–
Chem, a high-throughput
microscale electrochemical reactor that is compatible with existing
HTE infrastructure and enables the rapid evaluation of a broad array
of electrochemical reaction parameters. Utilizing the HT
e
–
Chem to accelerate reaction optimization,
reaction discovery, and chemical library synthesis is illustrated
using a suite of oxidative and reductive transformations under constant
current, constant voltage, and electrophotochemical conditions.
A 7-step synthesis of pharbinilic acid, a member of the gibberellin family of natural products and the first naturally occurring allogibberic acid, is reported. An efficient decarboxylative aromatization reaction enables the synthesis of pharbinilic acid and related analogs for evaluation as modulators of NF-κB activity. Remarkably, one analog displays a 2 μM IC50 in an NF-κB activity assay and inhibits an endogenous NF-κB-regulated pathway.
Organic
electrochemistry has emerged as an enabling and sustainable technology in
modern organic synthesis. Despite the recent renaissance of electrosynthesis,
the broad adoption of electrochemistry in the synthetic community and,
especially in industrial settings, has been hindered by the dearth of general,
standardized platforms for high-throughput experimentation (HTE). Herein, we
disclose the design of the HT<i>e<sup>-</sup></i>Chem,
a high-throughput microscale electrochemical reactor that is compatible with
existing HTE infrastructure, and enables rapid evaluation of a broad array of electrochemical
reaction parameters. Utilizing the HT<i>e<sup>-</sup></i>Chem
to accelerate reaction optimization, reaction discovery, and chemical library
synthesis is illustrated using a suite of oxidative and reductive transformations
under constant current, constant voltage, and electrophotochemical conditions.
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