Production of Polyester Blend of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) and Poly(3-hydroxyalkanoate) with Saturated and Unsaturated Monomers from 4-Hydroxybutyric Acid byChromobacteriumsp.
Production of Polyester Blend of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) and Poly(3-hydroxyalkanoate) with Saturated and Unsaturated Monomers from 4-Hydroxybutyric Acid byChromobacteriumsp.
Synthesis of Cyclopentene Derivatives via Electrochemically Induced Intermolecular Selective (3+2) Annulation
作者:Zhipeng Guan、Shuxiang Zhu、Yayu Ye、Xiangwei Li、Yanlong Liu、Pengjie Wang、Heng Zhang、Zhiliang Huang、Aiwen Lei
DOI:10.1002/anie.202207059
日期:2022.8.26
An electrochemical mediator-induced intermolecular selective (3+2) annulation of readily available alkenes and alkynes/alkenes was developed. The simple and efficient method allows the synthesis of a library of decorated cyclopentenes and cyclopentanes. A preliminary mechanistic investigation was performed, which indicated that an iodine radical and carbon radicals are involved in this transformation
Halogen-Bonding-Enabled Photoinduced Atom Transfer Radical Addition/Cyclization Reaction Leading to Tricyclic Heterocycles
作者:Eiji Yamaguchi、Masanobu Murai、Akichika Itoh
DOI:10.1021/acs.joc.4c00204
日期:——
Atomtransferradicaladdition (ATRA) reactions are crucial for the dual functionalization of unsaturated hydrocarbons. Radical generation, pivotal in ATRA, has seen advancements from thermal to photochemical methods. Recent focus on halogen-bonding-based radical generation, including our group’s innovative photochemical approach, offers cost-effective alternatives to transition-metal-dependent photocatalysts
Production of Polyester Blend of Poly(3-hydroxybutyrate-<i>co</i>-4-hydroxybutyrate) and Poly(3-hydroxyalkanoate) with Saturated and Unsaturated Monomers from 4-Hydroxybutyric Acid by<i>Chromobacterium</i>sp.
Chromobacterium sp. isolated from a river soil produced a polyester blend of poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(P(3HB-co-4HB)) and poly(3-hydroxyalkanoate) (P(3HA)) consisting of both saturated 3-hydroxyalkanoic acid(3HA) units of even carbon number from C4 to C14 and unsaturated 3HA units of carbon number C12 and C14, when 4-hydroxybutyric acid(4HBA) was fed as the sole carbon sources.